Fractyl Health, Inc. (GUTS)
GUTS moved a median of -0.25% 30 minutes after news, and -1.42% by the close. How GUTS actually reacts to news — the realized, point-in-time move the market made, measured across 489 labeled events over the last three years with zero look-ahead.
GUTS’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.10% | 42% | 474 |
| 30-min | -0.25% | 42% | 474 |
| 60-min | +0.05% | 51% | 474 |
| to close | -1.42% | 37% | 471 |
| Middle 50% of GUTS reactions | -1.94% to +1.43% |
|---|---|
| Median reaction (30-min) | -0.25% |
| Measured reactions | 489 |
Half of all Fractyl Health, Inc. news events land between -1.94% and +1.43% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How GUTS reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Coverage initiations | 20 | -2.66% | 20% | -4.04% |
| Rating reiterations | 14 | -0.67% | 29% | +0.83% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 4 further classes were observed with fewer than 10 measured events and are not published. See how GUTS ranks against every other measured name →
That’s how GUTS usually reacts — get an email when it moves on news →Email me when GUTS moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to GUTS's baseline. Nothing else.
Recent GUTS events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K FRACTYL HEALTH, INC. For: Oct 16 | SEC filing · Form 8-K | SEC EDGAR | +2.58% | -27.57% | |
| Fractyl Health's Revita Meets Six-Month Co-Primary Endpoint in Ongoing REMAIN-1 Pivotal Study, With Highly Statistically Significant Reduction in Weight Regain After GLP-1 Discontinuation | Press release | GlobeNewswire | +2.58% | -27.57% | |
| Form 8-K FRACTYL HEALTH, INC. For: Sep 30 | SEC filing · Form 8-K | SEC EDGAR | -10.54% | -12.47% | |
| Form 8-K FRACTYL HEALTH, INC. For: Sep 24 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.12% | |
| Form 8-K FRACTYL HEALTH, INC. For: Sep 10 | SEC filing · Form 8-K | SEC EDGAR | -4.96% | -3.09% | |
| Fractyl Health to Participate in Upcoming September Investor Conferences | Press release | GlobeNewswire | +2.16% | -6.57% | |
| Form DEF 14A FRACTYL HEALTH, INC. For: Aug 24 | SEC filing · Form DEF | SEC EDGAR | -1.32% | +3.13% | |
| Fractyl Health to Host Virtual Commercial Strategy Day on Tuesday, September 1, 2026: The Potential Path to Commercializing Revita®, a Procedural Therapy for Post-GLP-1 Weight Maintenance | Press release | GlobeNewswire | -0.57% | -2.69% | |
| Form PRE 14A FRACTYL HEALTH, INC. For: Sep 24 | SEC filing · Form PRE | SEC EDGAR | -0.16% | -2.94% | |
| Fractyl Health to Report Second Quarter 2026 Financial Results and Provide Business Updates on August 10, 2026 | Press release | GlobeNewswire | +0.41% | -1.01% | |
| Fractyl Health to Participate in Upcoming Investor Events | Press release | GlobeNewswire | -0.46% | -0.17% | |
| Form 8-K FRACTYL HEALTH, INC. For: Jul 15 | SEC filing · Form 8-K | SEC EDGAR | +1.17% | +8.32% | |
| Fractyl Health Reports Positive Randomized Data from REMAIN-1 Midpoint Cohort Demonstrating Durable Weight Maintenance One Year After GLP-1 Discontinuation | Press release | GlobeNewswire | +1.17% | +8.32% | |
| Form 8-K FRACTYL HEALTH, INC. For: Jun 10 | SEC filing · Form 8-K | SEC EDGAR | +0.39% | +11.99% | |
| Form 8-K FRACTYL HEALTH, INC. For: Jun 04 | SEC filing · Form 8-K | SEC EDGAR | +0.83% | -3.22% | |
| Fractyl Health Reports Positive One-Year REVEAL-1 Open-Label Results Showing Sustained Post-GLP-1 Weight Maintenance After a Single Revita® Procedure | Press release | GlobeNewswire | +0.83% | -3.22% | |
| Fractyl Health Appoints Mike Zumdahl as Senior Vice President, Market Access and Commercial Strategy | Press release | GlobeNewswire | -2.34% | +8.40% | |
| Form 10-Q FRACTYL HEALTH, INC. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +6.05% | +26.10% | |
| Form 8-K FRACTYL HEALTH, INC. For: May 12 | SEC filing · Form 8-K | SEC EDGAR | +6.05% | +26.10% | |
| Fractyl Health Reports First Quarter 2026 Financial Results and Business Updates | Press release | GlobeNewswire | +6.05% | +26.10% | |
| Form 8-K FRACTYL HEALTH, INC. For: May 11 | SEC filing · Form 8-K | SEC EDGAR | +4.62% | -0.67% | |
| Fractyl Health Authorized to Initiate First-in-Human Trial of RJVA-001 in the Netherlands: First Gene Therapy Candidate to Enter Clinical Development for Type 2 Diabetes | Press release | GlobeNewswire | +4.62% | -0.67% | |
| Fractyl Health to Report First Quarter 2026 Financial Results and Provide Business Updates on May 12, 2026, and Will Participate in an Upcoming Investor Conference | Press release | GlobeNewswire | +0.79% | -6.09% | |
| Form ARS FRACTYL HEALTH, INC. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.55% | +3.42% | |
| Form DEF 14A FRACTYL HEALTH, INC. For: Apr 23 | SEC filing · Form DEF | SEC EDGAR | +0.55% | +3.42% | |
| Form DEFA14A FRACTYL HEALTH, INC. | SEC filing · Form DEFA14A | SEC EDGAR | +0.55% | +3.42% | |
| Form 10-K FRACTYL HEALTH, INC. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -4.56% | +2.04% | |
| Form 8-K FRACTYL HEALTH, INC. For: Mar 24 | SEC filing · Form 8-K | SEC EDGAR | -4.56% | +2.04% | |
| Fractyl Health Reports Fourth Quarter and Full Year 2025 Financial Results and Business Updates | Press release | GlobeNewswire | -4.56% | +2.04% | |
| Form 8-K FRACTYL HEALTH, INC. For: Mar 13 | SEC filing · Form 8-K | SEC EDGAR | +1.61% | -1.72% | |
| Fractyl Health to Report Fourth Quarter and Full Year 2025 Financial Results and Provide Business Updates on March 24, 2026 | Press release | GlobeNewswire | +4.52% | +4.32% | |
| Form 8-K FRACTYL HEALTH, INC. For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | -8.79% | -6.92% | |
| Fractyl Health Completes Randomization in REMAIN-1 Pivotal Cohort of Revita® for Post-GLP-1 Weight Maintenance | Press release | GlobeNewswire | -8.79% | -6.92% | |
| Form 8-K FRACTYL HEALTH, INC. For: Jan 29 | SEC filing · Form 8-K | SEC EDGAR | -6.63% | -13.76% | |
| Fractyl Health Announces Compelling 6-Month Randomized REMAIN-1 Midpoint Data Showing Durable Weight Maintenance with Revita® After GLP-1 Discontinuation | Press release | GlobeNewswire | -6.63% | -13.76% | |
| Form S-8 FRACTYL HEALTH, INC. | SEC filing · Form S-8 | SEC EDGAR | -0.25% | +0.50% | |
| Form 8-K FRACTYL HEALTH, INC. For: Dec 30 | SEC filing · Form 8-K | SEC EDGAR | -1.23% | -1.96% | |
| Fractyl Health Appoints Lara Smith Weber as Chief Financial Officer to Support Commercial-Stage Preparedness | Press release | GlobeNewswire | -1.23% | -1.96% | |
| Form 8-K FRACTYL HEALTH, INC. For: Jan 05 | SEC filing · Form 8-K | SEC EDGAR | -3.85% | -11.97% | |
| Fractyl Health Enters a Catalyst-Rich 2026 Positioned to Define the Post-GLP-1 Weight Maintenance Therapeutic Category | Press release | GlobeNewswire | -3.85% | -11.97% | |
| Form 8-K FRACTYL HEALTH, INC. For: Dec 15 | SEC filing · Form 8-K | SEC EDGAR | -2.63% | +3.35% | |
| Fractyl Health Announces Call of Tranche A Warrants Tied to August 2025 Public Offering Following Achievement of Clinical and Trading Milestones | Press release | GlobeNewswire | -2.63% | +3.35% | |
| Form 8-K FRACTYL HEALTH, INC. For: Dec 02 | SEC filing · Form 8-K | SEC EDGAR | -0.97% | +18.71% | |
| Fractyl Health Reports Positive 6-Month REVEAL-1 Open-Label Results Showing Sustained Post-GLP-1 Weight Maintenance After a Single Revita® Procedure | Press release | GlobeNewswire | -0.97% | +18.71% | |
| Fractyl Health to Participate in the 8th Annual Evercore Healthcare Conference | Press release | GlobeNewswire | +2.26% | +0.65% | |
| Form 10-Q FRACTYL HEALTH, INC. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -2.78% | — | |
| Form 8-K FRACTYL HEALTH, INC. For: Nov 12 | SEC filing · Form 8-K | SEC EDGAR | -2.78% | — | |
| Fractyl Health Reports Third Quarter 2025 Results; Revita® Clinical Momentum Builds Toward 2026 Pivotal Readout and PMA Filing, Cash Runway Extended into Early 2027 | Press release | GlobeNewswire | -2.78% | — | |
| Fractyl Health to Report Third Quarter 2025 Financial Results and Provide Business Updates on November 12, 2025 | Press release | GlobeNewswire | +0.00% | -1.74% | |
| Fractyl Health Announces Potent Preclinical Results from RJVA-002, a Dual GIP/GLP-1 Gene Therapy Candidate for Obesity | Press release | GlobeNewswire | -1.66% | -9.27% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the GUTS section they belong to.
Where else GUTS is measured.
GUTS earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Fractyl Health, Inc.'s median reaction calculated?
Every labeled GUTS news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 489 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 42% of GUTS's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does GUTS's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.