XFOR Institutional Ownership & Shareholders
X4 PHARMACEUTICALS INC (XFOR) is currently held by 89 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $450.34M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Morgan Stanley is currently the largest disclosed institutional shareholder of XFOR tracked by InsiderSet, reporting ownership valued at approximately $44.18M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $31.70M, representing an estimated loss of -28.27% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 69% of the total disclosed XFOR value among the investors covered in this analysis. Major shareholders include Morgan Stanley, Fmr Llc, Bain Capital Life Sciences Investors, Llc, and several other long-term asset managers with concentrated positions in X4 PHARMACEUTICALS INC (XFOR).
This page ranks the largest institutional XFOR shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
89
Total Reported Value
$450.34M
Largest Holder
Morgan Stanley
Largest Position
$44.18M
Insider Transactions (90d)
8
Latest Filing Quarter
Q2 2026
New Institutional Positions
127
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Morgan Stanley | 0.00% | 9,461,279 | $44,184,173 | $31,695,285 | -$12,488,888 | -28.27% | |
| Fmr Llc | 0.00% | 8,321,657 | $38,862,138 | $27,877,551 | -$10,984,587 | -28.27% | |
| Bain Capital Life Sciences Investors, Llc | 2.21% | 7,967,454 | $37,208,011 | $26,690,971 | -$10,517,040 | -28.27% | |
| Perceptive Advisors Llc | 0.58% | 7,933,491 | $37,049,403 | $26,577,195 | -$10,472,208 | -28.27% | |
| Saturn V Capital Management Lp | 4.67% | 6,973,343 | $32,565,512 | $23,360,699 | -$9,204,813 | -28.27% | |
| Empery Asset Management, Lp | 37.43% | 6,930,591 | $32,365,860 | $23,217,480 | -$9,148,380 | -28.27% | |
| Deep Track Capital, Lp | 0.40% | 5,878,757 | $27,453,795 | $19,693,836 | -$7,759,959 | -28.27% | |
| Blackrock, Inc. | 0.00% | 5,554,906 | $25,941,411 | $18,608,935 | -$7,332,476 | -28.27% | |
| Kalehua Capital Management Llc | 9.99% | 3,722,840 | $17,385,663 | $12,471,514 | -$4,914,149 | -28.27% | |
| Vanguard Capital Management Llc | 0.00% | 3,715,859 | $17,353,062 | $12,448,128 | -$4,904,934 | -28.27% | |
| Nea Management Company, Llc | 0.95% | 3,233,743 | $15,101,580 | $10,833,039 | -$4,268,541 | -28.27% | |
| Rosalind Advisors, Inc. | 5.64% | 3,214,766 | $15,012,957 | $10,769,466 | -$4,243,491 | -28.27% | |
| Braidwell Lp | 0.50% | 2,922,754 | $13,649,261 | $9,791,226 | -$3,858,035 | -28.27% | |
| Trails Edge Capital Partners, Lp | 1.91% | 2,571,478 | $12,008,803 | $8,614,451 | -$3,394,352 | -28.27% | |
| Nantahala Capital Management, Llc | 0.69% | 2,449,468 | $11,439,016 | $8,205,718 | -$3,233,298 | -28.27% | |
| Bvf Inc/Il | 0.27% | 2,233,742 | $10,431,575 | $7,483,036 | -$2,948,539 | -28.27% | |
| Geode Capital Management, Llc | 0.00% | 2,098,047 | $9,800,562 | $7,028,457 | -$2,772,105 | -28.29% | |
| Venrock Adviser, Llc | 0.27% | 1,934,253 | $9,032,962 | $6,479,748 | -$2,553,214 | -28.27% | |
| Samsara Biocapital, Llc | 0.54% | 1,395,587 | $6,517,391 | $4,675,216 | -$1,842,175 | -28.27% | |
| State Street Corp | 0.00% | 1,296,017 | $6,052,399 | $4,341,657 | -$1,710,742 | -28.27% | |
| Woodline Partners Lp | 0.01% | 1,001,095 | $4,675,114 | $3,353,668 | -$1,321,446 | -28.27% | |
| Goldman Sachs Group Inc | 0.00% | 916,536 | $4,280,223 | $3,070,396 | -$1,209,827 | -28.27% | |
| Northern Trust Corp | 0.00% | 652,849 | $3,048,805 | $2,187,044 | -$861,761 | -28.27% | |
| Vanguard Fiduciary Trust Co | 0.00% | 572,038 | $2,671,417 | $1,916,327 | -$755,090 | -28.27% | |
| Vanguard Portfolio Management Llc | 0.00% | 542,128 | $2,531,738 | $1,816,129 | -$715,609 | -28.27% | |
| Verdad Advisers, Lp | 1.57% | 352,093 | $1,644,274 | $1,179,512 | -$464,762 | -28.27% | |
| Charles Schwab Investment Management Inc | 0.00% | 263,264 | $1,229,443 | $881,934 | -$347,509 | -28.27% | |
| Stonepine Capital Management, Llc | 0.80% | 224,989 | $1,050,699 | $753,713 | -$296,986 | -28.27% | |
| Bank Of New York Mellon Corp | 0.00% | 196,340 | $916,908 | $657,739 | -$259,169 | -28.27% | |
| Affinity Asset Advisors, Llc | 0.03% | 145,000 | $677,150 | $485,750 | -$191,400 | -28.27% | |
| Nuveen, Llc | 0.00% | 107,389 | $501,507 | $359,753 | -$141,754 | -28.27% | |
| Invesco Ltd. | 0.00% | 96,772 | $451,926 | $324,186 | -$127,740 | -28.27% | |
| Alps Advisors Inc | 0.00% | 95,726 | $447,040 | $320,682 | -$126,358 | -28.27% | |
| Rhumbline Advisers | 0.00% | 95,081 | $444,022 | $318,521 | -$125,501 | -28.26% | |
| Susquehanna Portfolio Strategies, Llc | 0.01% | 87,282 | $407,607 | $292,395 | -$115,212 | -28.27% | |
| Deutsche Bank Ag\ | 0.00% | 78,885 | $368,393 | $264,265 | -$104,128 | -28.27% | |
| Gsa Capital Partners Llp | 0.02% | 76,314 | $356,000 | $255,652 | -$100,348 | -28.19% | |
| American Century Companies Inc | 0.00% | 74,795 | $349,293 | $250,563 | -$98,730 | -28.27% | |
| Citigroup Inc | 0.00% | 70,112 | $327,423 | $234,875 | -$92,548 | -28.27% | |
| Wells Fargo & Company/Mn | 0.00% | 67,712 | $316,215 | $226,835 | -$89,380 | -28.27% | |
| Palumbo Wealth Management Llc | 0.07% | 67,116 | $313,432 | $224,839 | -$88,593 | -28.27% | |
| Squarepoint Ops Llc | 0.00% | 67,078 | $313,254 | $224,711 | -$88,543 | -28.27% | |
| Price T Rowe Associates Inc | 0.00% | 66,379 | $310,000 | $222,370 | -$87,630 | -28.27% | |
| Ubs Group Ag | 0.00% | 58,043 | $271,060 | $194,444 | -$76,616 | -28.27% | |
| Wellington Management Group Llp | 0.00% | 51,800 | $241,906 | $173,530 | -$68,376 | -28.27% | |
| Metlife Investment Management, Llc | 0.00% | 47,969 | $224,015 | $160,696 | -$63,319 | -28.27% | |
| Bank Of America Corp | 0.00% | 46,861 | $218,841 | $156,984 | -$61,857 | -28.27% | |
| Point72 Asset Management, L.P. | 0.00% | 41,072 | $191,806 | $137,591 | -$54,215 | -28.27% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.00% | 37,073 | $173,131 | $124,195 | -$48,936 | -28.27% | |
| Jump Financial, Llc | 0.00% | 34,253 | $159,961 | $114,748 | -$45,213 | -28.27% |
Frequently asked questions about XFOR
Who are the largest institutional holders of XFOR?
The largest institutional holders of XFOR reported in the latest SEC Form 13F filings include Morgan Stanley, Fmr Llc, Bain Capital Life Sciences Investors, Llc, Perceptive Advisors Llc, and Saturn V Capital Management Lp. InsiderSet ranks institutional holders by their latest reported XFOR position.
What is XFOR institutional ownership?
This page tracks XFOR positions reported by institutional investment managers through SEC Form 13F. X4 PHARMACEUTICALS INC (XFOR) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own XFOR?
InsiderSet currently tracks 89 institutional managers reporting XFOR holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of XFOR shareholders.
How much XFOR stock do institutions own?
Institutional investment managers disclosed approximately $450.34M in XFOR holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was XFOR institutional ownership last updated?
The latest XFOR institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional XFOR holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its XFOR position after the reporting date.
Are institutions buying or selling XFOR?
Institutional buying and selling can be analyzed by comparing XFOR positions across consecutive 13F reporting periods. InsiderSet's XFOR Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View XFOR ownership changes.
How has XFOR institutional ownership changed over time?
InsiderSet tracks XFOR institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.