AVROBIO, Inc. (AVRO)
AVRO moved a median of -0.07% 30 minutes after news, and +0.11% by the close. How AVRO actually reacts to news — the realized, point-in-time move the market made, measured across 98 labeled events over the last three years with zero look-ahead.
AVRO’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 30% | 54 |
| 30-min | -0.07% | 27% | 60 |
| 60-min | 0.00% | 40% | 62 |
| to close | +0.11% | 52% | 62 |
| Middle 50% of AVRO reactions | -1.27% to +0.77% |
|---|---|
| Median reaction (30-min) | -0.07% |
| Measured reactions | 98 |
Half of all AVROBIO, Inc. news events land between -1.27% and +0.77% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when AVRO moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to AVRO's baseline. Nothing else.
Recent AVRO events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form EFFECT Tectonic Therapeutic, | SEC filing · Form EFFECT | SEC EDGAR | — | — | |
| Form 8-K Tectonic Therapeutic, For: Jul 30 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form S-1 Tectonic Therapeutic, | SEC filing · Form S-1 | SEC EDGAR | — | — | |
| Form 8-K Tectonic Therapeutic, For: Jun 28 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K Tectonic Therapeutic, For: Jun 25 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K Tectonic Therapeutic, For: Jun 20 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K/A AVROBIO, Inc. For: Jun 14 | SEC filing · Form 8-K | SEC EDGAR | -1.33% | -5.33% | |
| Form 8-K AVROBIO, Inc. For: Jun 14 | SEC filing · Form 8-K | SEC EDGAR | -3.40% | -0.68% | |
| Form SEC STAFF LETTER AVROBIO, Inc. | SEC filing · Form SEC | SEC EDGAR | +0.00% | -0.66% | |
| Form 8-K AVROBIO, Inc. For: Jun 11 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.67% | |
| Form 8-K AVROBIO, Inc. For: Jun 04 | SEC filing · Form 8-K | SEC EDGAR | — | -1.38% | |
| Tectonic Therapeutic Appoints Daniel Lochner as Chief Financial Officer | Press release | Business Wire | +0.00% | -1.38% | |
| SHAREHOLDER INVESTIGATION: Halper Sadeh LLC Investigates SWN, INBX, AVRO | Press release | PR Newswire | +0.00% | -0.81% | |
| Form 10-Q AVROBIO, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.40% | -1.60% | |
| Form EFFECT AVROBIO, Inc. | SEC filing · Form EFFECT | SEC EDGAR | — | +0.81% | |
| Form S-4/A AVROBIO, Inc. | SEC filing · Form S-4 | SEC EDGAR | -0.83% | -0.83% | |
| Form S-4/A AVROBIO, Inc. | SEC filing · Form S-4 | SEC EDGAR | -0.78% | -1.56% | |
| Form S-4/A AVROBIO, Inc. | SEC filing · Form S-4 | SEC EDGAR | -1.60% | +0.80% | |
| Tectonic Therapeutic Initiates Phase 1B Study for TX45 in Group 2 Pulmonary Hypertension in Patients with Preserved Ejection Fraction Heart Failure | Press release | Business Wire | -1.60% | +0.80% | |
| Form 10-K AVROBIO, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.00% | +4.00% | |
| SHAREHOLDER UPDATE: Halper Sadeh LLC Investigates CHRD, KAMN, CTLT, AVRO | Press release | Accesswire | +0.00% | +1.17% | |
| Tectonic Therapeutic Announces Participation at Investor Conferences in March | Press release | Business Wire | -1.48% | -3.70% | |
| BRODSKY & SMITH SHAREHOLDER UPDATE: Notifying Investors of the Following Investigations: AVROBIO, Inc. (Nasdaq – AVRO), Whole Earth Brands, Inc. (Nasdaq – FREE), Kinnate Biopharma Inc. (Nasdaq – KNTE), California BanCorp (Nasdaq – CALB) | Press release | GlobeNewswire | +0.00% | -0.38% | |
| SHAREHOLDER UPDATE: Halper Sadeh LLC Investigates CALB, AVRO, GLT, FREE | Press release | PR Newswire | -1.48% | -3.70% | |
| SHAREHOLDER UPDATE: Halper Sadeh LLC Investigates AVRO, CTLT, DOOR, FANG | Press release | GlobeNewswire | +0.00% | +1.56% | |
| SHAREHOLDER UPDATE: Halper Sadeh LLC Investigates GMGI, KRTX, SIX, AVRO | Press release | PR Newswire | -1.55% | +1.55% | |
| Form S-4 AVROBIO, Inc. | SEC filing · Form S-4 | SEC EDGAR | -0.39% | -0.77% | |
| SHAREHOLDER UPDATE: Halper Sadeh LLC Investigates AVRO, HAYN, CTLT, EVBG | Press release | GlobeNewswire | +0.00% | +0.00% | |
| INVESTIGATION ALERT: Halper Sadeh LLC Investigates AVRO, CSTR, BBAI, PGTI | Press release | PR Newswire | +0.77% | +0.77% | |
| SHAREHOLDER NOTICE: Halper Sadeh LLC Investigates AVRO, CALB, CSTR, ICVX | Press release | Accesswire | +0.79% | +0.00% | |
| AVRO Stock Alert: Halper Sadeh LLC Is Investigating Whether the Merger of AVROBIO, Inc. Is Fair to Shareholders | Press release | Business Wire | +4.95% | +13.86% | |
| AVROBIO and Tectonic Therapeutic Announce Merger | Press release | Business Wire | +4.95% | +13.86% | |
| BRODSKY & SMITH SHAREHOLDER UPDATE: Notifying Investors of the Following Investigations: AVROBIO, Inc. (Nasdaq – AVRO), California BanCorp (Nasdaq – CALB), Exro Technologies Inc. (OTC – EXROF), Karuna Therapeutics, Inc. (Nasdaq – KRTX) | Press release | GlobeNewswire | -0.46% | +5.02% | |
| Form 8-K AVROBIO, Inc. For: Jan 30 | SEC filing · Form 8-K | SEC EDGAR | +4.95% | +13.86% | |
| SHAREHOLDER NOTICE: Halper Sadeh LLC Investigates AVRO, CALB, BCAL | Press release | PR Newswire | +0.00% | +2.22% | |
| Form 10-Q AVROBIO, Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +4.96% | -2.84% | |
| Form RW AVROBIO, Inc. | SEC filing · Form RW | SEC EDGAR | +0.32% | -4.43% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the AVRO section they belong to.
Where else AVRO is measured.
AVRO earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| SunLink Health Systems, Inc. (SSY) | 99 | 0.00% | 49% |
| ARNO THERAPEUTICS INC (ARNI) | 98 | 0.00% | 23% |
| LIFELOC TECHNOLOGIES INC (LCTC) | 97 | 0.00% | 19% |
| ORGANIGRAM HOLDINGS INC (OGRMF) | 97 | +0.25% | 56% |
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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How the numbers are made.
How is AVROBIO, Inc.'s median reaction calculated?
Every labeled AVRO 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 98 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. 27% of AVRO'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 AVRO'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.