Who Owns X4 Pharmaceuticals, Inc. (XFOR)?Hedge Fund & Institutional Holders

$3.73-0.15 (-3.87%)HealthcareNASDAQ

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$3.580433000320004e+147T

% of Float Held

1.377668225200777e+265%

QoQ Change in Holders

+14 / -5

Price History

$1.42$7.13$12.83$18.54$24.24Aug 24Jun 25Mar 26

XFOR — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
Empery Asset Management, LPNew Position+9.0M+$35.8M
FMR LLCNew Position+8.5M+$33.0M
PERCEPTIVE ADVISORS LLCNew Position+6.3M+$25.3M
Saturn V Capital Management LPNew Position+5.8M+$23.2M
MORGAN STANLEYIncreased+8.2M+$19.3M
Kalehua Capital Management LLCNew Position+3.7M+$14.9M
BRAIDWELL LPNew Position+3.4M+$13.5M
Blackstone Inc.New Position+2.7M+$10.7M
Trails Edge Capital Partners, LPNew Position+2.6M+$10.3M
Samsara BioCapital, LLCNew Position+2.0M+$7.8M
Siren, L.L.C.New Position+1.5M+$6.0M
Woodline Partners LPNew Position+1.0M+$4.0M
GOLDMAN SACHS GROUP INCNew Position+832K+$3.0M
SILVERARC CAPITAL MANAGEMENT, LLCNew Position+357K+$1.4M
Affinity Asset Advisors, LLCNew Position+145K+$580K

XFOR — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
Stonepine Capital Management, LLCDecreased-463K-$3.6B
KINGDON CAPITAL MANAGEMENT, L.L.C.Closed Position-933K-$3.2B
BOOTHBAY FUND MANAGEMENT, LLCClosed Position-344K-$1.2B
Pale Fire Capital SEDecreased-13K-$617.8M
UBS Group AGDecreased-156K-$546.6M
MILLENNIUM MANAGEMENT LLCDecreased-9K-$221.6M
RENAISSANCE TECHNOLOGIES LLCClosed Position-19K-$65.6M
Tower Research Capital LLC (TRC)Decreased-233-$36.5M
Point72 Asia (Singapore) Pte. Ltd.Closed Position-3K-$10.0M
ROYAL BANK OF CANADADecreased-2K-$9.0M
BNP PARIBAS FINANCIAL MARKETSDecreased-43-$1.9M
IFP Advisors, IncClosed Position-0-$143K

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1Empery Asset Management, LP8,951,105$35.8M31.57%Share
2FMR LLC8,499,100$33.0M0.00%Share
3MORGAN STANLEY8,196,455$32.0M0.00%Share
4Bain Capital Life Sciences Investors, LLC7,967,454$31.9M2.44%Share
5PERCEPTIVE ADVISORS LLC6,314,452$25.3M0.45%Share
6Saturn V Capital Management LP5,800,530$23.2M4.26%Share
7Deep Track Capital, LP5,013,661$20.1M0.36%Share
8Kalehua Capital Management LLC3,722,840$14.9M14.73%Share
9BRAIDWELL LP3,368,904$13.5M0.43%Share
10VANGUARD GROUP INC2,909,952$11.6M0.00%Share
11Blackstone Inc.2,681,922$10.7M0.04%Share
12Rosalind Advisors, Inc.2,605,920$10.4M3.66%Share
13Trails Edge Capital Partners, LP2,571,478$10.3M2.54%Share
14Nantahala Capital Management, LLC2,449,468$9.8M0.32%Share
15BVF INC/IL2,233,742$8.9M0.30%Share
16Samsara BioCapital, LLC1,960,000$7.8M0.81%Share
17Siren, L.L.C.1,500,000$6.0M0.18%Share
18BlackRock, Inc.1,172,595$4.0M0.00%Share
19Woodline Partners LP1,000,855$4.0M0.02%Share
20STEMPOINT CAPITAL LP898,465$3.6M0.62%Share
21GEODE CAPITAL MANAGEMENT, LLC797,469$3.0M0.00%Share
22GOLDMAN SACHS GROUP INC831,890$3.0M0.00%Share
23Point72 Asset Management, L.P.808,154$3.0M0.00%Share
24Stonepine Capital Management, LLC593,573$2.4M1.73%Share
25VANGUARD GROUP INC480,733$1.9M0.00%Share
26SILVERARC CAPITAL MANAGEMENT, LLC357,387$1.4M0.20%Share
27GROUP ONE TRADING LLC184,100$736K0.00%Call
28Pale Fire Capital SE167,590$670K0.04%Share
29Affinity Asset Advisors, LLC145,000$580K0.03%Share
30Palumbo Wealth Management LLC113,357$453K0.11%Share
31VANGUARD GROUP INC32,977$131K0.00%Share
32Virtu Financial LLC22,489$90K0.00%Share
33CAXTON CORP15,557$62K1.45%Share
34Indivisible Partners10,000$40K0.00%Share
35UBS Group AG4,097$16K0.00%Share
36GROUP ONE TRADING LLC3,998$15K0.00%Share
37SIGNATUREFD, LLC2,754$11K0.00%Share
38Allworth Financial LP715$2K0.00%Share
39Bleichroeder LP595$2K0.00%Share
40Blue Trust, Inc.284$1K0.00%Share
41Farther Finance Advisors, LLC331$1K0.00%Share
42MORGAN STANLEY6,673$00.00%Share
43MORGAN STANLEY34$00.00%Share
44BlackRock, Inc.32$00.00%Share
45BlackRock, Inc.54,181$00.00%Share
46JPMORGAN CHASE & CO4,548$00.00%Share
47JPMORGAN CHASE & CO33$00.00%Share
48Susquehanna Portfolio Strategies, LLC43,259$00.00%Share
49HighMark Wealth Management LLC6$00.00%Share
50SBI Securities Co., Ltd.50$00.00%Share

XFOR Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 202575$333.6M+39
Q3 202536$46.7B-7
Q2 202543$3.6B+41
Q1 20252$27K—

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As of Q4 2025, 50 institutional investors hold XFOR (X4 Pharmaceuticals, Inc.). The largest holder is Empery Asset Management, LP with $35.8M in shares. This quarter, 14 institutions opened new positions and 5 closed their positions.

Frequently Asked Questions

How many hedge funds own XFOR?

As of Q4 2025, 50 institutional investors report holding XFOR (X4 Pharmaceuticals, Inc.) in their 13F filings.

Who is the largest institutional holder of XFOR?

The largest institutional holder of XFOR is Empery Asset Management, LP with $35.8M in shares.

Is institutional ownership of XFOR increasing or decreasing?

This quarter, 14 institutions opened new positions in XFOR and 5 closed their positions.