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Of the 8 tracked institutions holding XFOR, 3 have a 3-year clone track record — 3 of them beat the S&P. Average holder's clone alpha: +7.0pt. It's a gauge of who owns the name, not just how many.
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 →
Among the 8 tracked institutional investors we monitor, XFOR (X4 PHARMACEUTICALS INC) is held with a combined value of $85.38M across 18,773,593 shares. The largest holder is FMR LLC with a position worth $38.86M. 4 funds opened new positions in the most recent quarter. 4 funds increased their holdings.
Total Institutional Value
$85.38M
Total Shares Held
18,773,593
Institutional Holders
8
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | FMR LLC | $38.86M | 0.00% | +2.7% |
| 2 | BlackRock, Inc. | $25.94M | 0.00% | +358.4% |
| 3 | VANGUARD GROUP INC | $13.69M | 0.00% | +734.1% |
| 4 | STATE STREET CORP | $6.05M | 0.00% | +221.2% |
| 5 | PRICE T ROWE ASSOCIATES INC /MD/ | $310.00K | 0.00% | New |
| 6 | WELLINGTON MANAGEMENT GROUP LLP | $241.91K | 0.00% | New |
| 7 | Point72 Asset Management, L.P. | $191.81K | 0.00% | New |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $84.53K | 0.00% | New |
As of the latest SEC 13F filings, FMR LLC is the largest institutional holder of XFOR with a position worth $38.86M, representing 0.00% of their portfolio. In total, 8 institutional investors hold XFOR with a combined value of $85.38M.
In the most recent quarter, 4 funds opened a new position in XFOR. Additionally, 4 increased their holdings.
Institutional investors hold $85.38M worth of XFOR stock across 8 positions. The largest institutional holder is FMR LLC with $38.86M 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 XFOR, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their XFOR positions.
None this quarter.
| 2026-09-21 |
| 8.1% | 2026-08-14 |
| 8.3% | 2026-08-14 |
| 5.9% | 2026-07-30 |
SEC Schedule 13D (activist) and 13G (passive) filings for XFOR. Filed when an investor acquires 5%+ ownership.
Last Close
$3.01
2026-10-21
YTD
-22.6%
25% of 52-week range