Form 13-F position report

MERCK & CO INC;COM USD0.01

Reported by TWO SIGMA INVESTMENTS LP

MRK CUSIP 58933Y105 Manager CIK 0001179392

Reported 2,227,519 shares, up 1,329,341 (148.0%) from the prior quarter.

Reported value 162.6%; share count 148.0% vs. the prior quarter.

Added
% of reported 13F value 0.56% This manager · Q4 2023
Shares 2,227,519 Quarter-end amount reported
Reported value $242,844,121 Fair value at quarter end
Consecutive quarters held 2 Through Q4 2023

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Reported position value by quarter
Date Holding Value
2021-09-30 225464000
2021-12-31 222842000
2022-03-31 243784000
2022-06-30 3961000
2022-09-30 23349000
2022-12-31 0
2023-09-30 92467425
2023-12-31 242844121
2024-03-31 80674626
2024-06-30 183608028
2024-09-30 219958111
2024-12-31 191879909
2025-03-31 197534922
2025-06-30 193019628
2025-09-30 165266647
2025-12-31 7876080
2026-03-31 7737654
2026-06-30 6248313

Quarterly position history

How this manager's reported quarter-end position changed over time.

18 quarters
Quarterly reported position history for MERCK & CO INC;COM USD0.01 held by TWO SIGMA INVESTMENTS LP.
Quarter Activity Shares Change % of reported 13F Reported value Filed Source filing
Q2 2026 Reduced 48,625 -15,700 (-24.4%) < 0.01% $6,248,313 2026-08-14
Q1 2026 Reduced 64,325 -10,500 (-14.0%) < 0.01% $7,737,654 2026-05-15
Q4 2025 Reduced 74,825 -1,894,276 (-96.2%) 0.01% $7,876,080 2026-02-17
Q3 2025 Reduced 1,969,101 -469,247 (-19.2%) 0.25% $165,266,647 2025-11-14
Q2 2025 Added 2,438,348 +237,647 (10.8%) 0.34% $193,019,628 2025-08-14
Q1 2025 Added 2,200,701 +271,872 (14.1%) 0.42% $197,534,922 2025-05-15
Q4 2024 Reduced 1,928,829 -8,104 (-0.4%) 0.42% $191,879,909 2025-02-14
Q3 2024 Added 1,936,933 +453,831 (30.6%) 0.48% $219,958,111 2024-11-14
Q2 2024 Added 1,483,102 +871,699 (142.6%) 0.42% $183,608,028 2024-08-14
Q1 2024 Reduced 611,403 -1,616,116 (-72.6%) 0.19% $80,674,626 2024-05-15
Q4 2023 Added 2,227,519 +1,329,341 (148.0%) 0.56% $242,844,121 2024-02-14
Q3 2023 New 898,178 +898,178 (0.0%) 0.25% $92,467,425 2023-11-14
Q4 2022 Reduced 0 -271,116 (-100.0%) 0 $0 2023-02-14
Q3 2022 Added 271,116 +227,665 (524.0%) 0.08% $23,349,000 2022-11-14
Q2 2022 Reduced 43,451 -2,927,708 (-98.5%) 0.01% $3,961,000 2022-08-15
Q1 2022 Added 2,971,159 +63,512 (2.2%) 0.72% $243,784,000 2022-05-16
Q4 2021 Reduced 2,907,647 -94,140 (-3.1%) 0.48% $222,842,000 2022-02-14
Q3 2021 Reduced 3,001,787 -190,330 (-6.0%) 0.5% $225,464,000 2021-11-15
Five years are shown. A free account unlocks the complete reported history. Unlock full history

Who else reported the position

3537 managers reported MERCK & CO INC;COM USD0.01 for Q4 2023.

Managers reporting MERCK & CO INC;COM USD0.01 in Q4 2023.
Manager Activity Shares Change % of reported 13F Reported value Tenure
VANGUARD GROUP INC Added 244,776,747 +1,236,228 0.58% $26,685,560,957 43 qtrs
BlackRock Inc Reduced 201,836,434 -1,098,587 0.56% $22,004,208,018 43 qtrs
STATE STREET CORPORATION Added 116,865,977 +1,196,373 0.62% $12,828,426,632 43 qtrs
WELLINGTON MANAGEMENT GROUP LLP Added 85,595,999 +3,153,333 1.74% $9,331,675,812 43 qtrs
GEODE CAPITAL MANAGEMENT LLC Added 55,428,245 +1,354,125 0.63% $6,028,744,165 43 qtrs
FMR LLC Added 42,800,017 +4,654,819 0.36% $4,666,057,794 43 qtrs
MORGAN STANLEY Added 40,129,825 +1,535,032 0.39% $4,374,953,967 43 qtrs
Bank of America Corporation Added 37,994,581 +2,244,455 0.42% $4,142,169,188 43 qtrs
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Added 36,682,866 +4,731,152 1.01% $3,966,028,653 43 qtrs
PRICE T ROWE ASSOCIATES INC MD Added 30,087,217 +809,052 0.44% $3,280,109,000 43 qtrs
Premium adds each manager's conviction percentile across reporting peers.
Filing details and methodology As reported
Report period
December 31, 2023
Filed
February 14, 2024
Filing type
13F-HR
Position type
COM

Voting authority reported

Sole
2,227,519
Shared
0
None
0

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.