Merus N.V. - Common Shares (MRUS)
MRUS moved a median of +0.03% 30 minutes after news, and -0.05% by the close. How MRUS actually reacts to news — the realized, point-in-time move the market made, measured across 292 labeled events over the last three years with zero look-ahead.
MRUS’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 45% | 283 |
| 30-min | +0.03% | 54% | 284 |
| 60-min | +0.01% | 50% | 284 |
| to close | -0.05% | 48% | 283 |
| Middle 50% of MRUS reactions | -1.20% to +0.87% |
|---|---|
| Median reaction (30-min) | +0.03% |
| Measured reactions | 292 |
Half of all Merus N.V. - Common Shares news events land between -1.20% and +0.87% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How MRUS reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst downgrades | 40 | +0.03% | 60% | +0.04% |
| Coverage initiations | 27 | +0.53% | 52% | -0.66% |
| Rating reiterations | 84 | +0.16% | 52% | -0.17% |
| Price-target raises | 15 | -0.51% | 40% | -1.45% |
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. 2 further classes were observed with fewer than 10 measured events and are not published. See how MRUS ranks against every other measured name →
That’s how MRUS usually reacts — get an email when it moves on news →Email me when MRUS moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to MRUS's baseline. Nothing else.
Recent MRUS events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 15-12G Merus N.V. | SEC filing · Form 15-12G | SEC EDGAR | — | — | |
| Form 8-K Merus N.V. For: Dec 29 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K Merus N.V. For: Dec 12 | SEC filing · Form 8-K | SEC EDGAR | +0.07% | +0.13% | |
| Form POSASR Merus N.V. | SEC filing · Form POSASR | SEC EDGAR | +0.07% | +0.13% | |
| Form S-8 POS Merus N.V. | SEC filing · Form S-8 | SEC EDGAR | +0.07% | +0.13% | |
| Form 8-K Merus N.V. For: Dec 09 | SEC filing · Form 8-K | SEC EDGAR | +0.09% | +0.12% | |
| Form DEFM14A Merus N.V. | SEC filing · Form DEFM14A | SEC EDGAR | +0.03% | +0.35% | |
| Form 10-Q Merus N.V. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.03% | -0.04% | |
| Form PREM14A Merus N.V. For: Oct 31 | SEC filing · Form PREM14A | SEC EDGAR | +0.03% | -0.04% | |
| Form DEFA14A Merus N.V. | SEC filing · Form DEFA14A | SEC EDGAR | +0.05% | +0.07% | |
| EQT Life Sciences portfolio company Merus to be acquired by Genmab in an all-cash USD 8.0 billion transaction | Press release | PR Newswire | +0.07% | +0.57% | |
| Form 8-K Merus N.V. For: Sep 29 | SEC filing · Form 8-K | SEC EDGAR | -0.09% | -0.81% | |
| Form DEFA14A Merus N.V. | SEC filing · Form DEFA14A | SEC EDGAR | -0.09% | -0.81% | |
| MRUS Stock Alert: Halper Sadeh LLC Is Investigating Whether the Sale of Merus N.V. Is Fair to Shareholders | Press release | Business Wire | -0.09% | -0.81% | |
| Merus to Present at the 2025 Wells Fargo Healthcare Conference | Press release | GlobeNewswire | +0.30% | -2.22% | |
| Merus to Present at the Canaccord Genuity 45th Annual Growth Conference | Press release | GlobeNewswire | +2.05% | +3.23% | |
| Form 10-Q Merus N.V. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +2.05% | +3.23% | |
| Merus Announces Financial Results for the Second Quarter 2025 and Provides Business Update | Press release | GlobeNewswire | +2.05% | +3.23% | |
| Merus N.V. Reports Inducement Grants Under Nasdaq Listing Rule 5635(c)(4) | Press release | GlobeNewswire | -0.61% | +0.39% | |
| Form 8-K Merus N.V. For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | -1.67% | -3.48% | |
| Form 8-K Merus N.V. For: May 22 | SEC filing · Form 8-K | SEC EDGAR | +0.51% | +10.21% | |
| Form 8-K Merus N.V. For: May 21 | SEC filing · Form 8-K | SEC EDGAR | +0.19% | -2.05% | |
| Form 10-Q Merus N.V. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.01% | +4.32% | |
| Form DEF 14A Merus N.V. For: May 21 | SEC filing · Form DEF | SEC EDGAR | -1.30% | -0.89% | |
| Form PRE 14A Merus N.V. For: May 21 | SEC filing · Form PRE | SEC EDGAR | +0.23% | +2.27% | |
| Form 10-K/A Merus N.V. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +2.57% | -9.38% | |
| Form 10-K Merus N.V. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.45% | +5.82% | |
| Merus announces First Patient Dosed in Phase 2 Trial of Petosemtamab in 3L+ mCRC | Press release | GlobeNewswire | +0.20% | +4.88% | |
| Merus’ Petosemtamab Monotherapy Interim Data Continues to Demonstrate Clinically Meaningful Activity in 2L+ r/m HNSCC | Press release | GlobeNewswire | +6.80% | +3.85% | |
| Form 8-K Merus N.V. For: Dec 04 | SEC filing · Form 8-K | SEC EDGAR | -0.04% | -5.33% | |
| Form 8-K Merus N.V. For: Nov 27 | SEC filing · Form 8-K | SEC EDGAR | +0.93% | +5.73% | |
| Merus Announces Publication of an Abstract on Petosemtamab as 2L+ treatment of r/m HNSCC at the ESMO Asia Congress 2024 | Press release | GlobeNewswire | +0.93% | +5.73% | |
| Form 8-K Merus N.V. For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | -0.03% | +1.26% | |
| Form 10-Q Merus N.V. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -2.28% | -1.77% | |
| Foundation Medicine Collaborates With Merus to Advance Treatment Options in NRG1 Fusion-Driven Tumors Using Foundation Medicine’s RNA Platform | Press release | Business Wire | -0.57% | -2.12% | |
| Form 10-Q Merus N.V. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.52% | +0.19% | |
| Form 8-K Merus N.V. For: Jun 30 | SEC filing · Form 8-K | SEC EDGAR | +3.41% | +3.15% | |
| Merus Presents Interim Data on MCLA-145 Monotherapy and in Combination with Pembrolizumab at the 2024 ASCO® Annual Meeting | Press release | GlobeNewswire | +1.54% | -0.26% | |
| Form 8-K Merus N.V. For: May 29 | SEC filing · Form 8-K | SEC EDGAR | -2.53% | -7.21% | |
| Merus Announces Pricing of Upsized Public Offering of Common Shares | Press release | GlobeNewswire | +2.61% | +3.26% | |
| Form 8-K Merus N.V. For: May 28 | SEC filing · Form 8-K | SEC EDGAR | -0.31% | -1.46% | |
| Form 8-K/A Merus N.V. For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +1.86% | +1.75% | |
| Form 10-Q Merus N.V. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.28% | -4.24% | |
| Form 8-K Merus N.V. For: May 07 | SEC filing · Form 8-K | SEC EDGAR | -0.80% | -2.69% | |
| Form DEFA14A Merus N.V. | SEC filing · Form DEFA14A | SEC EDGAR | -0.70% | -1.71% | |
| Form DEF 14A Merus N.V. For: May 07 | SEC filing · Form DEF | SEC EDGAR | +0.36% | -1.60% | |
| Form PRE 14A Merus N.V. For: May 07 | SEC filing · Form PRE | SEC EDGAR | -1.33% | -0.90% | |
| Form 8-K Merus N.V. For: Mar 05 | SEC filing · Form 8-K | SEC EDGAR | -0.66% | -2.56% | |
| Form 10-K Merus N.V. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -2.55% | -2.69% | |
| Form S-3ASR Merus N.V. | SEC filing · Form S-3ASR | SEC EDGAR | -2.55% | -2.69% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the MRUS section they belong to.
Where else MRUS is measured.
MRUS earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Adicet Bio, Inc. (ACET) | 293 | -0.83% | 36% |
| Amphastar Pharmaceuticals, Inc. (AMPH) | 293 | +0.08% | 52% |
| Trinity Biotech plc - American Depositary Shares (TRIB) | 292 | -0.13% | 44% |
| CRISPR Therapeutics AG - Common Shares (CRSP) | 291 | +0.10% | 53% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Healthcare names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Merus N.V. - Common Shares's median reaction calculated?
Every labeled MRUS 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 292 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. 54% of MRUS'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 MRUS'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.