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Walleye Trading LLC

Position in MRK — Merck & Co., Inc.

CIK 1388391 NEW YORK, NY

Position in MRK

as of Jun 30, 2026 · filed Aug 3, 2026
Position Value
$6,806,773
+$6,806,773 QoQ
Shares Held
52,971
Ownership
0.002%
of shares outstanding
% of Portfolio
0.10%
of 13F equity value
Holder Rank
#901
of 3,769 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MRK Over Time

Shares Held

Position Value (USD)

Derivatives in MRK

reported options exposure · as of Jun 30, 2026
CallValue
$25,520,100
CallShares
198,600
PutValue
$23,155,700
PutShares
180,200

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 Drug Manufacturers - General

Healthcare · as of Jun 30, 2026

Walleye Trading LLC holds $52,377,864 across 7 Drug Manufacturers - General names. MRK ranks #3 (13.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 MRK
Merck & Co., Inc.
This page
52,971 $6,806,773

All Filings in MRK

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $23,155,700 180,200
2026-06-30 $25,520,100 198,600
2026-06-30 $6,806,773 52,971
2026-03-31 $14,037,843 116,700
2026-03-31 $22,494,230 187,000
2025-12-31 $12,746,670 121,097
2025-12-31 $44,230,252 420,200
2025-12-31 $21,925,658 208,300
2025-09-30 $25,674,187 305,900
2025-09-30 $17,549,763 209,100
2025-09-30 $4,481,610 53,397
2025-06-30 $5,961,777 75,313
2025-06-30 $23,399,696 295,600
2025-06-30 $18,634,264 235,400
2025-03-31 $9,947,292 110,821
2025-03-31 $21,757,824 242,400
2025-03-31 $30,967,200 345,000
2024-12-31 $8,565,228 86,100
2024-12-31 $15,528,828 156,100
2024-09-30 $12,412,108 109,300
2024-09-30 $5,896,489 51,924
2024-09-30 $11,980,580 105,500
2024-06-30 $7,333,416 59,236
2024-06-30 $10,708,700 86,500
2024-06-30 $4,506,320 36,400
2024-03-31 $23,619,050 179,000
2024-03-31 $15,926,365 120,700
2023-12-31 $4,632,477 42,492
2023-12-31 $21,945,726 201,300
2023-12-31 $31,463,172 288,600
2023-09-30 $14,020,451 136,187
2023-09-30 $10,809,750 105,000
2023-09-30 $20,754,720 201,600
2023-06-30 $16,581,543 143,700
2023-06-30 $8,654,250 75,000
2023-03-31 $63,078,631 592,900
2023-03-31 $6,904,711 64,900
2022-12-31 $39,243,015 353,700
2022-12-31 $5,861,488 52,830
2022-12-31 $28,336,630 255,400
2022-09-30 $6,606,006 76,707
2022-09-30 $20,186,528 234,400
2022-09-30 $38,874,568 451,400
2022-06-30 $25,919,631 284,300
2022-06-30 $31,535,703 345,900
2022-03-31 $16,213,080 197,600
2022-03-31 $8,516,790 103,800
2021-12-31 $9,929,248 129,557
2021-12-31 $23,091,632 301,300
2021-12-31 $14,546,272 189,800