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X4 Pharmaceuticals, Inc

XFOR
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
SEC CIK
0001501697

In the last 90 days, X4 Pharmaceuticals, Inc insiders filed 0 open-market purchases and 3 sales; 89 institutions reported holding it in 13F filings for Q2 2026, worth $463.0M in total; no superinvestor holds it.

13F holders, Q1 2021

Institutional positions in X4 Pharmaceuticals, Inc as of Mar 31, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
61
No complete 13F data for Q4 2020
Shares held
16.1M
No complete 13F data for Q4 2020
Total value
$138.7M
No complete 13F data for Q4 2020

Holders and value by quarter

Institutions reporting XFOR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2021: 61 institutions
Q1 2021: 61 institutionsQ2 2021: 63 institutionsQ3 2021: 52 institutionsQ4 2021: 52 institutionsQ1 2022: 56 institutionsQ2 2022: 51 institutionsQ3 2022: 59 institutionsQ4 2022: 54 institutionsQ1 2023: 59 institutionsQ2 2023: 96 institutionsQ3 2023: 91 institutionsQ4 2023: 93 institutionsQ1 2024: 98 institutionsQ2 2024: 99 institutionsQ3 2024: 98 institutionsQ4 2024: 90 institutionsQ1 2025: 94 institutionsQ2 2025: 52 institutionsQ3 2025: 42 institutionsQ4 2025: 79 institutionsQ1 2026: 84 institutionsQ2 2026: 89 institutions
Value heldQ1 2021: $138.7M
Q1 2021: $138.7MQ2 2021: $107.8MQ3 2021: $85.7MQ4 2021: $40.2MQ1 2022: $28.6MQ2 2022: $15.5MQ3 2022: $66.9MQ4 2022: $60.2MQ1 2023: $53.6MQ2 2023: $219.1MQ3 2023: $122.6MQ4 2023: $81.2MQ1 2024: $143.2MQ2 2024: $58.9MQ3 2024: $67.3MQ4 2024: $73.2MQ1 2025: $23.3MQ2 2025: $5.33MQ3 2025: $55.3MQ4 2025: $357.7MQ1 2026: $388.1MQ2 2026: $463.0M
Institutions holding XFOR and their total value by quarter
QuarterHoldersValue
Q2 202689$463.0M
Q1 202684$388.1M
Q4 202579$357.7M
Q3 202542$55.3M
Q2 202552$5.33M
Q1 202594$23.3M
Q4 202490$73.2M
Q3 202498$67.3M
Q2 202499$58.9M
Q1 202498$143.2M
Q4 202393$81.2M
Q3 202391$122.6M
Q2 202396$219.1M
Q1 202359$53.6M
Q4 202254$60.2M
Q3 202259$66.9M
Q2 202251$15.5M
Q1 202256$28.6M
Q4 202152$40.2M
Q3 202152$85.7M
Q2 202163$107.8M
Q1 202161$138.7M

Institutions, Q1 2021

Shares, value and share of portfolio for each institution holding X4 Pharmaceuticals, Inc.

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding XFOR in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Ikarian Capital, LLC2,614,988$22.5M3.35%––
Bain Capital Life Sciences Investors, LLC2,119,540$18.2M1.03%––
OrbiMed Advisors LLC1,373,849$11.8M0.11%––
BlackRock Inc.1,091,753$9.40M0.00%––
BVF Inc1,091,579$9.40M0.35%––
Sio Capital Management, LLC804,597$6.93M1.45%––
Driehaus Capital Management LLC795,312$6.85M0.10%––
Vanguard Group Inc736,602$6.34M0.00%––
Monashee Investment Management LLC574,712$4.95M0.76%––
AXA S.A.568,847$4.90M0.01%––
Ra Capital Management, L.P.536,962$4.62M0.07%––
New Leaf Venture Partners, L.L.C.335,000$2.88M0.67%––
Polaris Venture Management Co. V, L.L.C.311,492$2.68M3.48%––
SV Health Investors, LLC311,490$2.68M1.00%––
Boothbay Fund Management, LLC308,561$2.66M0.14%––
State Street Corp276,840$2.38M0.00%––
Geode Capital Management, LLC258,165$2.22M0.00%––
Abingworth LLP229,885$1.96M0.68%––
FMR LLC212,620$1.83M0.00%––
Northern Trust Corp180,382$1.55M0.00%––
Hudson Bay Capital Management LP172,413$1.38M0.02%––
Renaissance Technologies LLC156,044$1.34M0.00%––
Endurant Capital Management LP151,996$1.31M0.36%––
Cormorant Asset Management, LP103,980$895.0K0.03%––
Goldman Sachs Group Inc83,037$715.0K0.00%––
Nuveen Asset Management, LLC80,113$689.0K0.00%––
Affinity Asset Advisors, LLC75,000$646.0K0.32%––
DAFNA Capital Management LLC69,912$602.0K0.14%––
Bank of New York Mellon Corp54,365$468.0K0.00%––
Dimensional Fund Advisors LP47,310$407.0K0.00%––
JPMorgan Chase & Co46,025$396.0K0.00%––
Charles Schwab Investment Management Inc41,673$359.0K0.00%––
Bleichroeder LP35,730$308.0K0.05%––
California Public Employees Retirement System32,500$280.0K0.00%––
Bank of America Corp31,703$273.0K0.00%––
Ensign Peak Advisors, Inc28,593$246.0K0.00%––
California State Teachers Retirement System24,681$213.0K0.00%––
Barclays PLC21,245$183.0K0.00%––
Squarepoint Ops LLC21,078$181.0K0.00%––
Rhumbline Advisers20,633$178.0K0.00%––
Panagora Asset Management Inc14,087$121.0K0.00%––
Manufacturers Life Insurance Company, The10,565$91.0K0.00%––
Deutsche Bank AG10,439$90.0K0.00%––
The PNC Financial Services Group, Inc.10,350$89.0K0.00%––
American International Group, Inc.9,370$81.0K0.00%––
New York State Common Retirement Fund6,901$59.0K0.00%––
Russell Investments Group, Ltd.6,786$58.0K0.00%––
BNP Paribas Arbitrage, SA5,609$48.3K0.00%––
Wells Fargo & Company5,579$48.0K0.00%––
UBS Group AG3,990$34.0K0.00%––
Morgan Stanley3,124$27.0K0.00%––
Tower Research Capital LLC (TRC)3,023$26.0K0.00%––
Royal Bank of Canada1,724$15.0K0.00%––
Legal & General Group Plc1,423$12.0K0.00%––
Citigroup Inc1,068$9.00K0.00%––
Ameritas Investment Partners, Inc.987$8.00K0.00%––
Bank of Montreal477$5.00K0.00%––
Glassman Wealth Services300$3.00K0.00%––
Advisor Group Holdings, Inc.400$3.00K0.00%––
Clearstead Advisors, LLC100$1.00K0.00%––
Harbour Investments, Inc.10$00.00%––