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MILLENNIUM MANAGEMENT LLC

Position in XFOR — X4 Pharmaceuticals, Inc

CIK 1273087 NEW YORK, NY

Position in XFOR

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$4,999,422
+$4,775,510 QoQ
Shares Held
1,210,514
+2062.5% QoQ
Ownership
1.22%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
21 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in XFOR Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

MILLENNIUM MANAGEMENT LLC holds $4,631,421,099 across 322 Biotechnology names.

# Ticker Company Shares Value (USD) Open

All Filings in XFOR

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21 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $4,999,422 1,210,514
2025-12-31 $223,912 55,978
2025-09-30 $221,598 64,795
2025-06-30 $148,315 78,061
2025-03-31 $61,067 258,759
2024-12-31 $189,929 258,759
2024-09-30 $242,986 363,208
2024-06-30 $199,181 343,416
2024-03-31 $359,675 258,759
2023-12-31 $1,396,361 1,664,317
2023-09-30 $3,941,400 3,615,964
2023-06-30 $10,576,123 5,451,610
2023-03-31 $939,785 1,080,213
2022-12-31 $1,145,358 1,153,433
2022-09-30 $193,168 112,964
2022-06-30 $74,967 77,687
2022-03-31 $706,905 403,946
2021-12-31 $463,686 202,483
2021-09-30 $1,414,376 267,368
2021-06-30 $2,509,045 386,007
2020-03-31 $165,459 16,546