AI summary pending
View Full Filing (SEC EDGAR)Korro Bio Inc
$8.81-6%
+$19.7M
Net Activity
+9.75% total shares
Institutions Holding
109
Popularity Rank
#4397
Avg Weight
0.16%
Total Value
$192.3M
Market Cap
$82.8M
109 institutions currently hold KRRO, with 68 net buyers and 34 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
34
Net Buying Institutions
68
Top 5 by Value
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Across its top 20 institutional holders, KRRO's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 27/100, avg. turnover score 40/100).
KRRO ranks #4397 out of 37696 tracked stocks by institutional interest, inside the more closely watched half of our coverage.
KRRO is a top-conviction position for 72 Investment Holdings, LLC — at 7.3% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in KRRO belongs to Lynx1 Capital Management LP, but the position matters far more to 72 Investment Holdings, LLC, who has 7.3% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
Farther Finance Advisors, LLC has added to its KRRO position for two straight quarters, increasing it by $2.2K to reach $2.9K today.
Essential Partners LLC has trimmed its KRRO position for two straight quarters, cutting it by $14.4K while still holding $605.0.
KRRO is down 6% today, but institutions show net buying of $19.7M this quarter — a divergence between today's price move and the underlying institutional flow.
KRRO reported a net loss of $106.6M over the trailing twelve months.
+$31.0M
Total Buy Value
$15.1M
Total Sell Value
68
Net Buyers
34
Net Sellers
KRRO
Q2 2026
Top 5 Institutional Movers
KRRO does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
14
Filings (90d)
$1.84M
Total Est. Value
93K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| Atlas Venture Opportunity Fund II, L.P. | 2026-09-14 | $91K |
| Atlas Venture Fund XI, L.P. | 2026-09-14 | $440K |
| Atlas Venture Opportunity Fund II, L.P. | 2026-09-11 | $23K |
| Atlas Venture Fund XI, L.P. | 2026-09-11 | $110K |
| Dolan Oliver | 2026-09-11 | $69 |
| Dolan Oliver | 2026-09-09 | $82 |
| Dolan Oliver | 2026-09-08 | $99K |
| Atlas Venture Fund XI, L.P. | 2026-08-26 | $3K |
| Atlas Venture Opportunity Fund II, L.P. | 2026-08-26 | $700 |
| Atlas Venture Opportunity Fund II, L.P. | 2026-08-19 | $65K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
1
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| BALYASNY ASSET MANAGEMENT L.P. | 13G/A | 2026-08-14 | 6.6% |
| Atlas Venture Fund XI, L.P. | 13D/A | 2026-08-04 | 4.9% |
3
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)No AI summary for this filing type
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)500946108
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,146
Total reported value
$257.5B
Held by 4146 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,137
Total reported value
$279.7B
Held by 4137 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,136
Total reported value
$649.5B
Held by 4136 institutions — one of the most-tracked stocks on AlphaSMO
Access KRRO's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/KRROCLI
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