8-K - Korro Bio, Inc. (0001703647) (Filer)
Published . Updated .
8-K - Korro Bio filed an 8-K with the SEC on Oct 22 (a notice of a material company event).
Directly affected
- KRRO Korro Bio
Named in this report.
Indirectly affected
- SPY SPDR S&P 500+1.6%
The broad U.S. stock market
- TLT iShares 20+ Year Treasury Bond-1.8%
Long-term U.S. government bonds
- QQQ Invesco QQQ+2.3%
Large technology stocks
- GLD SPDR Gold Shares-3.3%
Gold can move with the broad market
Price reaction, T-5 to T+3
| Ticker | T-5 | T-3 | T-1 | T0 | T+1 | T+2 | T+3 |
|---|---|---|---|---|---|---|---|
| KRRO | +0.86% | -5.35% | base | +29.64% | after close | after close | after close |
| SPY | -0.18% | -0.84% | base | -1.18% | after close | after close | after close |
| TLT | -0.31% | -0.97% | base | +1.86% | after close | after close | after close |
| QQQ | +0.41% | -0.96% | base | -2.85% | after close | after close | after close |
| GLD | +0.98% | +0.18% | base | -2.61% | after close | after close | after close |
Closing-price change versus T-1, the last close before the story. T0 to T+3 fill in after each market close. Prices: Alpaca IEX.
Market Call
Think this story will push the stock up or down over the next three trading days? Make a free call and see what other readers think. Points are play money with no cash value.
Filed: 2026-10-22 AccNo: 0001193125-26-428306 Size: 226 KB Item 8.01: Other Events Item 9.01: Financial Statements and Exhibits
Source: sec-edgar
The price since 22 Oct 2026: Korro Bio (KRRO) versus the S&P 500
| Company | When | Move | Status |
|---|---|---|---|
| GLD | that day | -2.61% | final price |
| GLD | three days earlier | +0.18% | final price |
| GLD | five days earlier | +0.98% | final price |
| Korro Bio (KRRO) | that day | +29.64% | final price |
| Korro Bio (KRRO) | three days earlier | -5.35% | final price |
| Korro Bio (KRRO) | five days earlier | +0.86% | final price |
| QQQ | that day | -2.85% | final price |
| QQQ | three days earlier | -0.96% | final price |
| QQQ | five days earlier | +0.41% | final price |
| SPY | that day | -1.18% | final price |
| SPY | three days earlier | -0.84% | final price |
| SPY | five days earlier | -0.18% | final price |
| TLT | that day | +1.86% | final price |
| TLT | three days earlier | -0.97% | final price |
| TLT | five days earlier | -0.31% | final price |
Who is named in “8-K - Korro Bio, Inc. (0001703647) (Filer)”
Companies carried with this story
- KRRO Korro Bio
For “8-K - Korro Bio, Inc. (0001703647) (Filer),” Korro Bio (KRRO) is linked, with no stored direction, high confidence. Reason on file: SEC 8-K filing -> direct issuer disclosure -> KRRO
How “8-K - Korro Bio, Inc. (0001703647) (Filer)” reaches Korro Bio (KRRO)
“8-K - Korro Bio, Inc. (0001703647) (Filer)” (22 Oct 2026) reaches Korro Bio (KRRO) through this story.
The link for Korro Bio (KRRO) is this: SEC 8-K filing -> direct issuer disclosure -> KRRO
Price levels for Korro Bio (KRRO)
KRRO traded between 9.21 and 9.73 across 1 sessions. The latest close on file is 9.26.
How strong the case is around Korro Bio (KRRO)
44 out of 100
“8-K - Korro Bio, Inc. (0001703647) (Filer)” scores 44 out of 100. The score uses 1 sources, a +30.82% difference versus the S&P 500 (SPY), and 1 linked companies.