Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]

items: [map[node:map[type:text value:Total] score:0.104233] map[node:map[boundingRect:map[bottom:431 height:231 left:0 right:412 top:200 width:412] lhId:page-4-DIV nodeLabel:body.en > div#page > main#main-content > div.homepage-video-mobile path:1,HTML,1,BODY,5,DIV,3,MAIN,2,DIV selector:body.en > div#page > main#main-content > div.homepage-video-mobile snippet:<div class="homepage-video-mobile" style="height: 230.72px;"> type:node] score:0.104233]]

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/wp-content/themes/tsmb/assets/public/fonts/tt_commons_me...	70 ms
www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_thin.otf	60 ms
www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_light.otf	55 ms
/wp-content/themes/tsmb/assets/public/fonts/tt_commons_de...	50 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.cube-scene > div.cube > div.cube__face > div.cube-bg `div.cube-scene > div.cube > div.cube__face > div.cube-bg`	www.twosigma.com/wp-content/uploads/2023/04/cube-finSci2-mobile-1x.jpg	225.3 KiB	107.3 KiB
li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image `li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image`	/wp-content/uploads/2025/11/data.as_.code_.hero_.sq_-scal...	63.4 KiB	44.2 KiB
li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image `li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image`	/wp-content/uploads/2025/11/CWB_6126.sq_-scaled-532x532-c...	26.8 KiB	15.6 KiB
li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image `li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image`	www.twosigma.com/wp-content/uploads/2026/01/Hero-scaled-532x532-c-default.png	23.8 KiB	13.9 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:46.8 label:Time to first byte subpart:timeToFirstByte] map[duration:2771.218 label:Resource load delay subpart:resourceLoadDelay] map[duration:118.17 label:Resource load duration subpart:resourceLoadDuration] map[duration:456.13 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-DIV

nodeLabel: div.cube-scene > div.cube > div.cube__face > div.cube-bg

path: 1,HTML,1,BODY,5,DIV,3,MAIN,2,DIV,0,DIV,0,DIV,0,DIV,1,DIV

selector: div.cube-scene > div.cube > div.cube__face > div.cube-bg

snippet: <div class="cube-bg" style="background-image: url("https://www.twosigma.com/wp-content/uploads/2023/04…");">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-DIV

nodeLabel: div.cube-scene > div.cube > div.cube__face > div.cube-bg

path: 1,HTML,1,BODY,5,DIV,3,MAIN,2,DIV,0,DIV,0,DIV,0,DIV,1,DIV

selector: div.cube-scene > div.cube > div.cube__face > div.cube-bg

snippet: <div class="cube-bg" style="background-image: url("https://www.twosigma.com/wp-content/uploads/2023/04…");">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
/wp-content/plugins/contact-form-7/includes/css/styles.cs...	1.0 KiB
fonts.googleapis.com/css2?family=PT+Mono&display=swap	955 B	855 ms
www.twosigma.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	30.9 KiB	450 ms
www.twosigma.com/wp-content/plugins/cf7-conditional-fields/style.css?ver=2.6.6	600 B
www.twosigma.com/wp-content/themes/tsmb/assets/public/build/site.css?ver=2.09	52.3 KiB	600 ms
www.twosigma.com/wp-content/themes/tsmb/style.css?ver=2.09	310 B
www.twosigma.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1	5.0 KiB	150 ms

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/cdn-cgi/challenge-platform/h/b/scripts/jsd/625261456364/...	14400.0 s	12.6 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

Element	Layout shift score
body.en > div#page > main#main-content > div.homepage-video-mobile `body.en > div#page > main#main-content > div.homepage-video-mobile`	0.104

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 230 ms 49.3 KiB

URL	Transfer Size	Est Savings
www.twosigma.com/wp-content/themes/tsmb/assets/public/build/site.css?ver=2.09	52.2 KiB	49.3 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.8 s 389.1 KiB

URL	Transfer Size	Est Savings
www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js	362.6 KiB	161.3 KiB
/wp-content/themes/tsmb/assets/public/build/home-scripts....	206.0 KiB	132.4 KiB
www.googletagmanager.com/gtag/js?id=UA-1613156-1	115.8 KiB	75.4 KiB
www.twosigma.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	30.8 KiB	20.1 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
www.twosigma.com/	9.5 s	37 ms	4.4 ms
Unattributable	1.3 s	23 ms	0.0 ms
www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js	1.2 s	1.0 s	81 ms
/wp-content/themes/tsmb/assets/public/build/home-scripts....	708 ms	319 ms	90 ms
www.twosigma.com/cdn-cgi/challenge-platform/scripts/jsd/main.js	218 ms	208 ms	2.5 ms
www.googletagmanager.com/gtag/js?id=UA-1613156-1	96 ms	64 ms	31 ms
www.twosigma.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	64 ms	39 ms	7.6 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Style & Layout	9.2 s
Script Evaluation	1.9 s
Other	1.7 s
Script Parsing & Compilation	234 ms
Rendering	95 ms
Parse HTML & CSS	81 ms
Garbage Collection	69 ms

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 3.7 KiB

URL	Transfer Size	Est Savings
/wp-content/plugins/cf7-conditional-fields/js/scripts.js?...	8.7 KiB	3.7 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
www.twosigma.com/wp-content/uploads/2023/02/230125_FinSci_Mobile1X.mp4	7.8 MiB
www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js	363.2 KiB
www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js	362.7 KiB
www.twosigma.com/wp-content/uploads/2023/04/cube-finSci2-mobile-1x.jpg	225.6 KiB
/wp-content/themes/tsmb/assets/public/build/home-scripts....	206.2 KiB
www.twosigma.com/wp-content/uploads/2023/04/Stars_1280x232.mp4	145.3 KiB
/wp-content/themes/tsmb/assets/public/fonts/tt_commons_de...	130.8 KiB
www.twosigma.com/wp-content/uploads/2023/02/230125_FinSci_Desktop2X.mp4	128.2 KiB
www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_light.otf	127.3 KiB
www.twosigma.com/wp-content/themes/tsmb/assets/public/fonts/tt_commons_thin.otf	127.3 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image `li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image`	www.twosigma.com/wp-content/uploads/2026/01/Hero-scaled-532x532-c-default.png
li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image `li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image`	/wp-content/uploads/2025/11/CWB_6126.sq_-scaled-532x532-c...
li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image `li.card > div.articleCard__link > div.articleCard__content > img.articleCard__image`	/wp-content/uploads/2025/11/data.as_.code_.hero_.sq_-scal...
This is Financial Sciences. `div#page > main#main-content > div.homepage-title-mobile > img`	/wp-content/themes/tsmb/assets/public/img/mobile-homepage...
two sigma logo `header.globalHeader > div.globalHeader__content > a.globalHeader__branding > img.logo-mobile`	www.twosigma.com/wp-content/themes/tsmb/assets/public/img/logo-diamond.svg
div.content > nav.globalFooter__menus > div.globalFooter__menu > img.quickLinks__icon `div.content > nav.globalFooter__menus > div.globalFooter__menu > img.quickLinks__icon`	www.twosigma.com/wp-content/themes/tsmb/assets/public/img/plus.svg
Open `div.globalHeader__content > div.globalHeader__navTrigger > button.globalHeader__trigger > img`	www.twosigma.com/wp-content/themes/tsmb/assets/public/img/nav-arrow-black.svg

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Document request latency

●Optimize DOM size

●Forced reflow

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Avoid long main-thread tasks 17 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 30 ms

●Server Backend Latencies 60 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 30 ms

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Data Science, Engineering AI in Investment Management: 2026 Outlook (Part I) Wo… `div.relatedArticles > div.content > div > ul.relatedArticles__cards`

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Data Science, Engineering AI in Investment Management: 2026 Outlook (Part I) `ul.relatedArticles__cards > div.flickity-viewport > div.flickity-slider > li.card`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Accept `div.content > div.cookieBar-actions > div.cookieBar-buttons > button.button`
Reject `div.content > div.cookieBar-actions > div.cookieBar-buttons > button.button`

These are opportunities to improve keyboard navigation in your application.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●`<video>` elements contain a `<track>` element with `[kind="captions"]`

●Identical links have the same purpose.

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
SharedStorage	www.twosigma.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	www.twosigma.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge	www.twosigma.com/cdn-cgi/challenge-platform/scripts/jsd/main.js

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
/wp-content/themes/tsmb/assets/public/build/home-scripts....

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
www.twosigma.com/legal-disclosure/cookies-policy/	here
www.twosigma.com/legal-disclosure/privacy-policy/	Learn More
www.twosigma.com/articles/ai-in-investment-management-2026-outlook-part-i/	Read more
/articles/office-hours-with-chris-busby-global-head-of-in...	Read more
www.twosigma.com/articles/treating-data-as-code-at-two-sigma/	Read more
www.twosigma.com/businesses/real-estate/	Learn more

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`