Parallax Volatility Advisers
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Parallax Volatility Advisers’s Merck MRK Stock Holding History

Parallax Volatility Advisers’s Portfolio MRK Stock Details MRK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$4.39M Sell
39,000
-2,200
-5% -$254K 0.01% 606
2025
Q4 		$4.34M Buy
41,200
+21,200
+106% +$1.99M 0.01% 719
2025
Q3 		$1.68M Sell
20,000
-79,700
-80% -$6.56M ﹤0.01% 974
2025
Q2 		$7.89M Buy
99,700
+79,600
+396% +$6.33M 0.02% 498
2025
Q1 		$1.8M Sell
20,100
-396,000
-95% -$37M ﹤0.01% 896
2024
Q4 		$41.4M Buy
416,100
+225,800
+119% +$23.3M 0.08% 189
2024
Q3 		$21.6M Buy
190,300
+165,100
+655% +$19.6M 0.04% 314
2024
Q2 		$3.12M Sell
25,200
-81,600
-76% -$10.5M 0.01% 874
2024
Q1 		$14.1M Sell
106,800
-93,800
-47% -$11.6M 0.03% 405
2023
Q4 		$21.9M Sell
200,600
-102,000
-34% -$10.6M 0.04% 368
2023
Q3 		$31.2M Sell
302,600
-289,100
-49% -$31.2M 0.07% 222
2023
Q2 		$68.3M Buy
591,700
+474,300
+404% +$53.9M 0.15% 114
2023
Q1 		$12.5M Sell
117,400
-40,900
-26% -$4.42M 0.03% 509
2022
Q4 		$17.6M Sell
158,300
-296,800
-65% -$30.3M 0.03% 562
2022
Q3 		$39.2M Buy
455,100
+134,100
+42% +$12M 0.06% 337
2022
Q2 		$29.3M Buy
321,000
+59,600
+23% +$5.28M 0.03% 386
2022
Q1 		$98.2M Sell
261,400
-111,900
-30% -$8.82M 0.05% 139
2021
Q4 		$28.6M Sell
373,300
-208,200
-36% -$16.6M 0.03% 341
2021
Q3 		$43.7M Sell
581,500
-90,100
-13% -$6.85M 0.04% 284
2021
Q2 		$52.2M Buy
+671,600
New +$50M 0.07% 185
2021
Q1 		– Sell
-1,576,087
Closed -$123M – 1935
2020
Q4 		$123M Sell
1,576,087
-272,480
-15% -$20.8M 0.12% 125
2020
Q3 		$146M Buy
1,848,567
+432,509
+31% +$33.9M 0.11% 160
2020
Q2 		$104M Buy
1,416,058
+39,720
+3% +$2.99M 0.12% 136
2020
Q1 		$101M Sell
1,376,338
-1,395,203
-50% -$110M 0.13% 111
2019
Q4 		$241M Buy
2,771,541
+2,235,699
+417% +$184M 0.28% 55
2019
Q3 		$43M Buy
535,842
+100,503
+23% +$8.05M 0.05% 214
2019
Q2 		$34.8M Sell
435,339
-115,385
-21% -$8.83M 0.04% 237
2019
Q1 		$43.7M Sell
550,724
-72,207
-12% -$5.4M 0.05% 184
2018
Q4 		$45.4M Buy
622,931
+405,471
+186% +$28.6M 0.06% 208
2018
Q3 		$14.7M Buy
217,460
+93,482
+75% +$5.96M 0.02% 367
2018
Q2 		$7.18M Sell
123,978
-138,022
-53% -$7.79M 0.01% 522
2018
Q1 		$13.6M Sell
262,000
-605,639
-70% -$32.7M 0.02% 325
2017
Q4 		$46.6M Buy
867,639
+612,032
+239% +$33.9M 0.06% 142
2017
Q3 		$15.6M Sell
255,607
-111,193
-30% -$6.74M 0.03% 310
2017
Q2 		$22.4M Buy
366,800
+104,800
+40% +$6.38M 0.04% 235
2017
Q1 		$15.9M Sell
262,000
-920,039
-78% -$55.8M 0.03% 287
2016
Q4 		$66.4M Buy
1,182,039
+1,048,000
+782% +$61.3M 0.13% 113
2016
Q3 		$7.98M Buy
134,039
+51,666
+63% +$3.02M 0.01% 515
2016
Q2 		$4.53M Buy
82,373
+18,131
+28% +$965K 0.01% 656
2016
Q1 		$3.24M Sell
64,242
-108,783
-63% -$5.33M 0.01% 721
2015
Q4 		$8.72M Sell
173,025
-74,617
-30% -$3.76M 0.02% 502
2015
Q3 		$11.7M Sell
247,642
-436,388
-64% -$23.2M 0.03% 387
2015
Q2 		$37.2M Sell
684,030
-643,157
-48% -$36.1M 0.08% 166
2015
Q1 		$72.8M Buy
1,327,187
+16,873
+1% +$955K 0.17% 94
2014
Q4 		$71M Buy
1,310,314
+759,695
+138% +$42.3M 0.21% 98
2014
Q3 		$31.1M Buy
550,619
+550,305
+175,256% +$30.9M 0.1% 177
2014
Q2 		$18K Sell
314
-754,246
-100% -$41.1M ﹤0.01% 3531
2014
Q1 		$40.9M Sell
754,560
-232,866
-24% -$12.1M 0.24% 85
2013
Q4 		$47.2M Buy
987,426
+499,687
+102% +$22.8M 0.23% 99
2013
Q3 		$22.2M Sell
487,739
-1,708,240
-78% -$78M 0.12% 156
2013
Q2 		$97.3M Buy
+2,195,979
New +$98.1M 0.46% 46

Other funds holding MRK

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Parallax Volatility Advisers's MRK Position: Q1 2026 in Review

Parallax Volatility Advisers increased its Merck (MRK) stake by 182% in Q1 2026, buying an estimated $8.77M and bringing the position to 117,704 shares worth $13.2M. The position accounts for 0.03% of the portfolio, ranked #339.

Parallax Volatility Advisers first reported a position in MRK in Q2 2013 and has held it in 26 quarters since. The position peaked at $83.7M in Q4 2018. 3,777 funds tracked by Wall St. Rank hold MRK as of Q1 2026.

  • Parallax Volatility Advisers held 117,704 shares of Merck worth $13.2M as of Q1 2026.
  • Parallax Volatility Advisers bought 76,007 Merck shares in Q1 2026, an estimated $8.77M.
  • Merck made up 0.03% of Parallax Volatility Advisers's portfolio in Q1 2026, its #339 holding.
  • Parallax Volatility Advisers first reported a position in Merck in Q2 2013 and has held it in 26 quarters since.
  • Parallax Volatility Advisers's Merck position peaked at $83.7M in Q4 2018.
  • 3,777 funds tracked by Wall St. Rank held Merck as of Q1 2026.

Based on Parallax Volatility Advisers's 13F filing for Q1 2026, filed 15 May 2026.