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Equibles

CITADEL ADVISORS LLC

Position in BLLN — BillionToOne, Inc.

CIK 1423053 MIAMI, FL
Back to BLLN Full portfolio

Position in BLLN

as of Jun 30, 2026 · filed Sep 2, 2026
Position Value
$1,818,296
+$1,818,296 QoQ
Shares Held
15,155
Ownership
0.032%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#72
of 156 holders
Holding Since
Dec 2025
3 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in BLLN Over Time

Shares Held

Position Value (USD)

Derivatives in BLLN

reported options exposure · as of Jun 30, 2026
CallValue
$2,591,568
CallShares
21,600
PutValue
$743,876
PutShares
6,200

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 Diagnostics & Research

Healthcare · as of Jun 30, 2026

CITADEL ADVISORS LLC holds $1,695,016,013 across 33 Diagnostics & Research names. BLLN ranks #24 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 TMO
Thermo Fisher Scientific Inc.
 574,992 $288,277,988
2 CRL
Charles River Laboratories International, Inc.
 1,193,601 $270,696,770
3 GH
Guardant Health, Inc.
 1,449,534 $217,473,585
4 DHR
Danaher Corp /De/
 943,694 $179,754,833
5 RVTY
Revvity, Inc.
 1,457,335 $162,143,091
6 A
Agilent Technologies, Inc.
 1,101,501 $146,312,377
7 NTRA
Natera, Inc.
 265,607 $72,099,020
8 WGS
GeneDx Holdings Corp.
 865,462 $59,413,965

All Filings in BLLN

Export CSV
5 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,818,296 15,155
2026-06-30 $2,591,568 21,600
2026-06-30 $743,876 6,200
2026-03-31 $426,276 5,400
2025-12-31 $12,183,357 148,868