X4 PHARMACEUTICALS INC (XFOR) Institutional Ownership Changes & 13F Activity

X4 PHARMACEUTICALS INC (XFOR). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Venrock Adviser, Llc, Perceptive Advisors Llc, State Street Corp, Susquehanna International Group, Llp, and Vanguard Portfolio Management Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
State Street CorpBuy+892,483+221.2%1,296,017$6.05MQ2 2026Sep 22, 2026
Manufacturers Life Insurance Company, TheBuy+22,083—22,083$103.13KQ2 2026Sep 09, 2026
California State Teachers Retirement SystemBuy+1,113—1,113$5.20KQ2 2026Aug 24, 2026
Stonepine Capital Management, LlcSell-110,320-32.9%224,989$1.05MQ2 2026Aug 17, 2026
Venrock Adviser, LlcBuy+1,603,728+485.2%1,934,253$9.03MQ2 2026Aug 14, 2026
Perceptive Advisors LlcBuy+1,195,843+17.7%7,933,491$37.05MQ2 2026Aug 14, 2026
Susquehanna International Group, LlpSell-842,172-98.4%14,050$65.61KQ2 2026Aug 14, 2026
Saturn V Capital Management LpBuy+516,697+8.0%6,973,343$32.57MQ2 2026Aug 14, 2026
Deep Track Capital, LpSell-460,778-7.3%5,878,757$27.45MQ2 2026Aug 14, 2026
Samsara Biocapital, LlcSell-436,979-23.8%1,395,587$6.52MQ2 2026Aug 14, 2026
Verdad Advisers, LpBuy+352,093—352,093$1.64MQ2 2026Aug 14, 2026
Braidwell LpSell-350,200-10.7%2,922,754$13.65MQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+196,515+294.4%263,264$1.23MQ2 2026Aug 14, 2026
Bank Of America CorpSell-103,815-68.9%46,861$218.84KQ2 2026Aug 14, 2026
Invesco Ltd.Buy+96,772—96,772$451.93KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+67,712—67,712$316.21KQ2 2026Aug 14, 2026
Squarepoint Ops LlcBuy+67,078—67,078$313.25KQ2 2026Aug 14, 2026
Price T Rowe Associates IncBuy+66,379—66,379$310.00KQ2 2026Aug 14, 2026
Wellington Management Group LlpBuy+51,800—51,800$241.91KQ2 2026Aug 14, 2026
Metlife Investment Management, LlcBuy+47,969—47,969$224.01KQ2 2026Aug 14, 2026
Point72 Asset Management, L.P.Buy+41,072—41,072$191.81KQ2 2026Aug 14, 2026
Mirae Asset Global Etfs Holdings Ltd.Buy+37,073—37,073$173.13KQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+34,402+3.9%916,536$4.28MQ2 2026Aug 14, 2026
Barclays PlcBuy+16,625+590.8%19,439$90.78KQ2 2026Aug 14, 2026
Susquehanna Portfolio Strategies, LlcSell-15,317-14.9%87,282$407.61KQ2 2026Aug 14, 2026
Alliancebernstein L.P.Buy+14,580—14,580$60.22KQ2 2026Aug 14, 2026
Legal & General Group PlcBuy+7,858—7,858$36.70KQ2 2026Aug 14, 2026
Two Sigma Investments, LpBuy+5,558+40.1%19,426$90.72KQ2 2026Aug 14, 2026
Royal Bank Of CanadaBuy+2,444+2125.2%2,559$12.00KQ2 2026Aug 14, 2026
Vanguard Portfolio Management LlcBuy+542,128—542,128$2.53MQ2 2026Aug 13, 2026
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Frequently asked questions about XFOR activity

  • Which institutional owners are buying XFOR?

    Institutional owners buying XFOR include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in XFOR activity?

    "Buy" means an investor increased their reported position in XFOR compared to the prior reporting period. This reflects growing exposure to X4 PHARMACEUTICALS INC (XFOR) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in XFOR increasing?

    Institutional interest in XFOR can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

XFOR Institutional Ownership Changes and 13F Activity Q2 2026 | InsiderSet