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CITADEL ADVISORS LLC

Position in PHAT — Phathom Pharmaceuticals, Inc.

CIK 1423053 MIAMI, FL

Position in PHAT

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$4,255,773
-$908,942 QoQ
Shares Held
383,058
+23.0% QoQ
Ownership
0.473%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in PHAT Over Time

Shares Held

Position Value (USD)

Derivatives in PHAT

reported options exposure · as of Mar 31, 2026
CallValue
$5,731,649
CallShares
515,900
PutValue
$213,312
PutShares
19,200

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Mar 31, 2026

CITADEL ADVISORS LLC holds $5,780,974,653 across 374 Biotechnology names. PHAT ranks #138 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PHAT

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $5,731,649 515,900
2026-03-31 $213,312 19,200
2026-03-31 $4,255,773 383,058
2025-12-31 $1,149,687 69,300
2025-12-31 $5,164,715 311,315
2025-12-31 $491,064 29,600
2025-09-30 $5,987,634 508,720
2025-09-30 $451,968 38,400
2025-06-30 $594,580 62,000
2025-06-30 $1,927,590 201,000
2025-03-31 $263,967 42,100
2025-03-31 $1,126,850 179,721
2025-03-31 $230,109 36,700
2024-12-31 $584,696 72,007
2024-12-31 $725,928 89,400
2024-12-31 $121,800 15,000
2024-09-30 $224,192 12,400
2024-09-30 $329,056 18,200
2024-09-30 $3,984,886 220,403
2024-06-30 $48,410 4,700
2024-06-30 $811,803 78,816
2024-06-30 $25,750 2,500
2024-03-31 $1,334,349 125,645
2024-03-31 $197,532 18,600
2024-03-31 $95,580 9,000
2023-12-31 $62,084 6,800
2023-12-31 $105,296 11,533
2023-12-31 $101,343 11,100
2023-09-30 $2,859,288 275,727
2023-09-30 $29,036 2,800
2023-09-30 $144,143 13,900
2023-06-30 $558,480 39,000
2023-06-30 $75,896 5,300
2023-06-30 $242,222 16,915
2023-03-31 $1,345,775 188,484
2023-03-31 $312,018 43,700
2023-03-31 $13,566 1,900
2022-12-31 $117,810 10,500
2022-12-31 $19,668 1,753
2022-12-31 $83,028 7,400
2022-09-30 $1,030,440 93,000
2022-06-30 $211,100 25,012
2022-06-30 $813,616 96,400
2022-03-31 $767,604 56,400
2021-12-31 $225,536 11,466
2021-09-30 $523,230 16,300
2021-09-30 $623,060 19,410
2021-06-30 $2,720,659 80,374
2021-03-31 $320,799 8,541
2020-12-31 $401,164 12,076