TOP TIERMARKET NEWSWIRE
Movers explained · 2026-09-23

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

Why Is RAPPORT THERAPEUTICS Equity (RAPP) Stock Down Today?

By the Top Tier Newswire AI Desk · September 23, 2026 at 3:41 PM ET · reviewed against 6 wire stories

RAPPORT THERAPEUTICS Equity (RAPP) is down -17.89% in the latest session. Our newswire has captured 6 stories on RAPP across 4 sources in the last 36 hours, with AI sentiment reading mixed (avg 49/100).

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Why RAPP stock is down today

RAPP stock fell 17.89% to $34.05 on September 23, marking a sharp decline driven by a combination of a CEO presentation at a neuropsychiatry summit and broader market pressure on biotech names. The stock opened at $41.01 and traded down to a session low of $33.83, with volume reaching 0.4 million shares, 1.1 times the 3-month average. The move followed a presentation by Rapport’s CEO at the TD Cowen Neuropsychiatry Summit and a broader sell-off in biotech stocks.

What Happened

The CEO of Rapport Therapeutics presented at the TD Cowen Neuropsychiatry Summit, which appears to have triggered investor concern. The presentation likely raised questions about the company’s prospects ahead of key data from the RAP-219 Phase II trial for bipolar mania. This event coincided with a broader downturn in biotech stocks, where Rapport was among the most heavily impacted. Additionally, recent insider transactions show the CEO and other executives have sold shares, which may have contributed to the bearish sentiment. The stock also continues a downward trend, having lost 21.0% over the past eight sessions.

What The Data Shows

The stock opened with a 1.1% gap down from the prior close and quickly deteriorated through the session. The intraday move from $41.01 to $33.83 reflects a significant loss of momentum. The 52-week tape showed 63 fresh 52-week lows on the same day, underscoring the magnitude of the decline. Over the past 30 days, sentiment has deteriorated from an average of 54/100 to 49/100. Meanwhile, insiders have sold a total of $7.5 million in shares over the past 90 days, with no insider buying reported.

What To Watch

The stock is currently priced at $34.06, within its 52-week range of $23.75 to $52.93. Investors should monitor the upcoming RAP-219 Phase II trial data, which remains a key catalyst for the company. Coverage breadth and analyst ratings will also be important to watch in the coming weeks.

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.

RAPP by the numbers

Last: $34.05Session: -17.89%7 sessions: -22.43%Coverage: 6 stories / 4 sourcesAI sentiment: 49/100 (mixed)Mkt cap: $1.9B52w: $23.75 to $52.93
RAPP · Sep 23 session (5-min) · -18.50% vs prior close · updated 8:58 PM ET
$33.11$37.52$41.94prev close $41.47$33.809:30 AM12:05 PM2:40 PM5:15 PM7:50 PM9:30 AM · $41.059:35 AM · $40.459:40 AM · $39.989:45 AM · $39.749:50 AM · $39.459:55 AM · $39.4010:00 AM · $38.8510:05 AM · $38.4710:10 AM · $38.2710:15 AM · $38.5110:20 AM · $38.2710:25 AM · $37.9610:30 AM · $37.6010:35 AM · $37.5810:40 AM · $37.5310:45 AM · $36.9710:50 AM · $36.7510:55 AM · $36.4411:00 AM · $36.2911:05 AM · $36.1511:10 AM · $36.3411:15 AM · $36.1511:20 AM · $35.7511:25 AM · $36.1711:30 AM · $35.7211:35 AM · $35.7511:40 AM · $35.8211:45 AM · $35.5111:50 AM · $35.1311:55 AM · $35.6812:00 PM · $35.0812:05 PM · $34.9912:10 PM · $35.1812:15 PM · $35.2312:20 PM · $35.2112:25 PM · $34.9812:30 PM · $35.0512:35 PM · $35.3012:40 PM · $35.1512:45 PM · $35.0012:50 PM · $34.8012:55 PM · $34.751:00 PM · $34.581:05 PM · $34.551:10 PM · $34.431:15 PM · $34.521:20 PM · $34.511:25 PM · $34.641:30 PM · $34.911:35 PM · $34.871:40 PM · $34.501:45 PM · $34.571:50 PM · $34.671:55 PM · $34.582:00 PM · $34.492:05 PM · $34.692:10 PM · $34.842:15 PM · $34.742:20 PM · $34.742:25 PM · $34.772:30 PM · $34.572:35 PM · $34.542:40 PM · $34.422:45 PM · $34.392:50 PM · $34.282:55 PM · $34.403:00 PM · $34.303:05 PM · $34.413:10 PM · $34.313:15 PM · $34.383:20 PM · $34.493:25 PM · $34.333:30 PM · $34.013:35 PM · $34.123:40 PM · $33.803:45 PM · $33.583:50 PM · $33.623:55 PM · $34.224:00 PM · $34.134:15 PM · $34.104:30 PM · $34.136:55 PM · $34.127:10 PM · $34.127:15 PM · $34.127:50 PM · $33.80
AI sentiment, last 36h · averaged over 6 stories · 49/100 neutral
AI sentiment 49/100 (neutral)0 · bearish50bullish · 100

The headlines behind the move

Story flow · 6 stories on the wire, last 36h · hover or tap a dot for the headline
36h ago24h ago12h agopublishInvesting.com Analyst Ratings · sentiment 61 · Raymond James reiterates Strong Buy on Rapport Therapeutics stockInvesting.com Analyst Ratings · 61Raymond James reiterates Strong Buy on Rapport Therapeutics stockSeeking Alpha · sentiment 56 · Rapport Therapeutics, Inc. (RAPP) Discusses RAP-219 Phase II Trial and Unmet Needs in Bipolar Mania TranscriptSeeking Alpha · 56Rapport Therapeutics, Inc. (RAPP) Discusses RAP-219 Phase II Trial and Unmet Needs in Bip…Investing.com Analyst Ratings · sentiment 56 · Citizens reiterates Rapport Therapeutics stock rating on Phase 2 trial potentialInvesting.com Analyst Ratings · 56Citizens reiterates Rapport Therapeutics stock rating on Phase 2 trial potentialSeeking Alpha · sentiment 54 · Rapport Therapeutics: Great CNS Science, But The Valuation Prices In Significant SuccessSeeking Alpha · 54Rapport Therapeutics: Great CNS Science, But The Valuation Prices In Significant SuccessInvestors.com · sentiment 28 · Biotech Stocks Dive As Top 2% Names Take Hardest HitInvestors.com · 28Biotech Stocks Dive As Top 2% Names Take Hardest HitThe Fly · sentiment 38 · Rapport drops after CEO presents at TD Cowen Neuropsychiatry SummitThe Fly · 38Rapport drops after CEO presents at TD Cowen Neuropsychiatry Summit
45d agoThe FlyBEARISH 38General

Rapport drops after CEO presents at TD Cowen Neuropsychiatry Summit

45d agoInvestors.comBEARISH 28General

Biotech Stocks Dive As Top 2% Names Take Hardest Hit

Biotech stocks widely slumped Wednesday, with Rapport, Climb Bio and Cullinan among some of the hardest-hit names.

45d agoSeeking AlphaNEUTRAL 54Analyst

Rapport Therapeutics: Great CNS Science, But The Valuation Prices In Significant Success

Rapport Therapeutics' current valuation reflects substantial optimism ahead of pivotal bipolar mania data for RAP-219. See why I rate RAPP stock a Hold.

45d agoInvesting.com Analyst RatingsBULLISH 56Analyst

Citizens reiterates Rapport Therapeutics stock rating on Phase 2 trial potential

Citizens reiterates Rapport Therapeutics stock rating on Phase 2 trial potential

46d agoSeeking AlphaBULLISH 56Product/PR

Rapport Therapeutics, Inc. (RAPP) Discusses RAP-219 Phase II Trial and Unmet Needs in Bipolar Mania Transcript

Rapport Therapeutics, Inc. (RAPP) Discusses RAP-219 Phase II Trial and Unmet Needs in Bipolar Mania September 22, 2026 12:30 PM EDTCompany...

46d agoInvesting.com Analyst RatingsBULLISH 61Analyst

Raymond James reiterates Strong Buy on Rapport Therapeutics stock

Raymond James reiterates Strong Buy on Rapport Therapeutics stock

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

Earlier RAPP move explainers: 2026-10-29 · 2026-10-28 · 2026-10-22 · 2026-10-21 · 2026-10-20 · 2026-09-24 · 2026-09-23