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Of the 9 tracked institutions holding QTTB, 4 have a 3-year clone track record — 4 of them beat the S&P. Average holder's clone alpha: +6.9pt. It's a gauge of who owns the name, not just how many.
Among the 9 tracked institutional investors we monitor, QTTB (Q32 BIO INC) is held with a combined value of $51.91M across 4,312,204 shares. The largest holder is RA CAPITAL MANAGEMENT, L.P. with a position worth $29.72M (0.26% of their portfolio). 3 funds opened new positions in the most recent quarter. 4 funds increased their holdings. 2 funds reduced their position.
Total Institutional Value
$51.91M
Total Shares Held
4,312,204
Institutional Holders
9
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | $29.72M | 0.26% | New |
| 2 | Point72 Asset Management, L.P. | $14.95M | 0.02% | New |
| 3 | RENAISSANCE TECHNOLOGIES LLC | $2.29M | 0.00% | -13.2% |
| 4 | CITADEL ADVISORS LLC | $1.54M | 0.00% | +679.4% |
| 5 | BlackRock, Inc. | $1.51M | 0.00% | +37.6% |
| 6 | VANGUARD GROUP INC | $1.07M | 0.00% | +8.7% |
| 7 | STATE STREET CORP | $665.21K | 0.00% | +25.8% |
| 8 | MILLENNIUM MANAGEMENT LLC | $139.22K | 0.00% | New |
| 9 | FMR LLC | $43.16K | 0.00% | -0.4% |
As of the latest SEC 13F filings, RA CAPITAL MANAGEMENT, L.P. is the largest institutional holder of QTTB with a position worth $29.72M, representing 0.26% of their portfolio. In total, 9 institutional investors hold QTTB with a combined value of $51.91M.
In the most recent quarter, 3 funds opened a new position in QTTB. Additionally, 4 increased their holdings and 2 reduced their positions.
Institutional investors hold $51.91M worth of QTTB stock across 9 positions. The largest institutional holder is RA CAPITAL MANAGEMENT, L.P. with $29.72M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For QTTB, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their QTTB positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| 2026-08-14 |
| 5.5% | 2026-07-31 |
SEC Schedule 13D (activist) and 13G (passive) filings for QTTB. Filed when an investor acquires 5%+ ownership.
Last Close
$8.23
2026-10-02
YTD
+139.2%
32% of 52-week range
