TOP TIERMARKET NEWSWIRE
Movers explained · 2026-08-18

Archived explainer. For the current picture see today's RDDT page.

Why Is REDDIT INC A (RDDT) Stock Down Today?

By the Top Tier Newswire AI Desk · August 18, 2026 at 12:19 AM ET · reviewed against 17 wire stories

REDDIT INC A (RDDT) is down -7.63% in the latest session. Our newswire has captured 17 stories on RDDT across 12 sources in the last 36 hours, with AI sentiment reading mixed (avg 55/100).

Public view, delayed 4h. Every headline, price and sentiment read below — and this write-up itself — reaches Pro subscribers live. Public readers see it once it clears the delay.

Reddit Inc A (RDDT) fell 7.63% to $164.50 in Monday trading, driven by profit-taking after a strong 12.6% gain on Friday. The stock is set to join the S&P 500 before market open on August 18, a move that typically boosts share prices. However, investors appear to be using the elevated price as an opportunity to lock in gains ahead of the index inclusion.

What Happened

The drop follows a recent surge in Reddit's stock, which climbed to a 52-week high of $282.95 in early August. The company has seen strong revenue growth, with year-to-date revenue rising 66.6% and data licensing revenue increasing 24% to $43 million. Despite these fundamentals, the stock has been volatile, with a beta of 2.03 indicating it moves more sharply than the broader market. The CEO and COO sold shares on July 15, and the CEO sold again on August 4, signaling caution from top executives. Meanwhile, Reddit is joining the S&P 500 in an off-cycle index change, a development that could bring new institutional buying pressure in the coming days.

What The Data Shows

The stock has moved up 14.0% over the last eight sessions, from $155.26 to $176.93, but has since pulled back sharply. Options activity shows 12 notable prints in the last 36 hours, with $9.3 million in call premiums and $4.1 million in put premiums. The largest single print was $4.7 million. Insiders have sold 9 times in the last 90 days, totaling $36.9 million. The stock also printed one fresh 52-week high and 47 fresh 52-week lows on August 18.

What To Watch

Reddit will join the S&P 500 on August 18. Investors should monitor how the stock reacts to the inclusion, as well as any unusual options activity or further insider transactions.

AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Public view is delayed 4 hours from real time. Not financial advice.

RDDT by the numbers

Last: $164.50Session: -7.63%7 sessions: -0.96%Coverage: 17 stories / 12 sourcesAI sentiment: 55/100 (mixed)Mkt cap: $29.0BP/E: 34.652w: $119.27 to $282.95
RDDT · Aug 18 session (5-min) · -1.57% vs prior close · updated 2:52 PM ET
$161$164$167prev close $164.50$161.917:00 AM8:57 AM10:55 AM12:52 PM2:50 PM7:00 AM · $164.507:05 AM · $164.287:10 AM · $164.267:15 AM · $164.247:20 AM · $164.317:25 AM · $164.357:30 AM · $164.487:35 AM · $164.247:40 AM · $165.407:45 AM · $165.507:50 AM · $166.397:55 AM · $165.908:00 AM · $166.048:05 AM · $165.188:10 AM · $165.118:15 AM · $165.118:20 AM · $165.008:25 AM · $165.048:30 AM · $165.008:35 AM · $165.108:40 AM · $164.908:45 AM · $165.168:50 AM · $166.408:55 AM · $166.009:00 AM · $166.209:05 AM · $166.269:10 AM · $166.309:15 AM · $167.009:20 AM · $166.579:25 AM · $166.669:30 AM · $164.199:35 AM · $164.349:40 AM · $163.629:45 AM · $163.589:50 AM · $163.699:55 AM · $162.9810:00 AM · $163.8510:05 AM · $163.2910:10 AM · $163.5610:15 AM · $162.6410:20 AM · $162.5310:25 AM · $162.5610:30 AM · $162.2010:35 AM · $162.0910:40 AM · $162.0710:45 AM · $162.1610:50 AM · $161.1210:55 AM · $161.2211:00 AM · $161.5211:05 AM · $161.6911:10 AM · $162.2011:15 AM · $161.9311:20 AM · $161.8311:25 AM · $161.9611:30 AM · $161.4011:35 AM · $162.3311:40 AM · $162.3211:45 AM · $162.3311:50 AM · $162.7011:55 AM · $163.1012:00 PM · $163.4812:05 PM · $163.0612:10 PM · $164.0712:15 PM · $163.8212:20 PM · $164.2312:25 PM · $164.0112:30 PM · $163.5012:35 PM · $164.1612:40 PM · $163.7812:45 PM · $163.7212:50 PM · $164.2312:55 PM · $164.881:00 PM · $164.711:05 PM · $164.201:10 PM · $163.861:15 PM · $163.701:20 PM · $163.371:25 PM · $163.241:30 PM · $163.001:35 PM · $163.001:40 PM · $162.971:45 PM · $163.721:50 PM · $163.381:55 PM · $163.012:00 PM · $163.002:05 PM · $162.782:10 PM · $162.562:15 PM · $162.782:20 PM · $162.962:25 PM · $162.632:30 PM · $162.612:35 PM · $162.482:40 PM · $161.922:45 PM · $161.932:50 PM · $161.91
AI sentiment, last 36h · averaged over 17 stories · 55/100 bullish
AI sentiment 55/100 (bullish)0 · bearish50bullish · 100

The headlines behind the move

Story flow · 8 stories on the wire, last 36h · hover or tap a dot for the headline
36h ago24h ago12h agopublishThe Motley Fool · sentiment 58 · Reddit's Data Licensing Revenue Grew 24% to $43 Million, With OpenAI and Google as Its Two Biggest Buyers. Here's Why That Number Is So Tiny.The Motley Fool · 58Reddit's Data Licensing Revenue Grew 24% to $43 Million, With OpenAI and Google as Its Tw…PR Newswire · sentiment 57 · Omneky Launches Self-Service ChatGPT AdvertisingPR Newswire · 57Omneky Launches Self-Service ChatGPT AdvertisingThe Fly · sentiment 56 · Reddit price target raised to $205 from $200 at Raymond JamesThe Fly · 56Reddit price target raised to $205 from $200 at Raymond JamesThe Motley Fool · sentiment 63 · Reddit to Join the S&P 500. Will This Send the Stock Back to Its 52-Week High?The Motley Fool · 63Reddit to Join the S&P 500. Will This Send the Stock Back to Its 52-Week High?Yahoo Finance · sentiment 32 · Snap Drops 3% After Ninth Circuit Strips Away Its Immunity Shield, Reddit EasesYahoo Finance · 32Snap Drops 3% After Ninth Circuit Strips Away Its Immunity Shield, Reddit EasesSeeking Alpha · sentiment 55 · 3 things to look out for on TuesdaySeeking Alpha · 553 things to look out for on TuesdayBarron's · sentiment 32 · U.S. Indexes Declined Monday; Reddit Took Biggest HitBarron's · 32U.S. Indexes Declined Monday; Reddit Took Biggest HitTipRanks · sentiment 48 · Reddit Stock (RDDT) Declines 8% on Monday – Here’s WhyTipRanks · 48Reddit Stock (RDDT) Declines 8% on Monday – Here’s Why
26d agoTipRanksNEUTRAL 48General

Reddit Stock (RDDT) Declines 8% on Monday – Here’s Why

Reddit ($RDDT) stock dropped about 8% on Monday as investors locked in gains following the stock’s strong 12.6% rally on Friday. The drop comes just ahead of Reddit...

26d agoBarron'sBEARISH 32General

U.S. Indexes Declined Monday; Reddit Took Biggest Hit

26d agoSeeking AlphaBULLISH 55General

3 things to look out for on Tuesday

Track Tuesday’s market catalysts: Home Depot Q2 earnings, Reddit joining the S&P 500, and Danish Defence Industry Day with LMT, RTX & GD—read now.

26d agoYahoo FinanceBEARISH 32General

Snap Drops 3% After Ninth Circuit Strips Away Its Immunity Shield, Reddit Eases

A federal appeals court just stripped away the legal shield that social media platforms have relied on for decades, and Snap is absorbing the first blow with thousands of lawsuits now cleared to proceed against it.

26d agoThe Motley FoolBULLISH 63General

Reddit to Join the S&P 500. Will This Send the Stock Back to Its 52-Week High?

Stocks that join the broad index typically see their share prices rise afterward.

26d agoThe FlyBULLISH 56Analyst

Reddit price target raised to $205 from $200 at Raymond James

27d agoPR NewswireBULLISH 57Product/PR

Omneky Launches Self-Service ChatGPT Advertising

Brands can now generate, launch, and optimize ads on ChatGPT alongside Meta, Google, LinkedIn, TikTok, and Reddit from one platform SAN FRANCISCO, Aug. 17, 2026 /PRNewswire/ -- Omneky, the autonomous AI growth platform, today announced that customers can now launch ads on ChatGPT directly...

27d agoThe Motley FoolBULLISH 58Product/PR

Reddit's Data Licensing Revenue Grew 24% to $43 Million, With OpenAI and Google as Its Two Biggest Buyers. Here's Why That Number Is So Tiny.

The company's data is valuable for AI training, but advertising is the bigger opportunity.

Want the next move before the crowd? The live terminal streams every headline in real time with watchlist alerts, AI sentiment, and the full data stack behind this page.Get Pro Access →

More on RDDT: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.

Earlier RDDT move explainers: 2026-09-11 · 2026-09-10 · 2026-09-03 · 2026-09-02 · 2026-09-01 · 2026-08-31 · 2026-08-18 · 2026-08-17 · 2026-07-31 · 2026-07-30 · 2026-07-22