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 		$3.4M Sell
30,200
-151,400
-83% -$17.5M 0.01% 674
2025
Q4 		$19.1M Sell
181,600
-143,600
-44% -$13.5M 0.04% 317
2025
Q3 		$27.3M Buy
325,200
+194,400
+149% +$16M 0.04% 237
2025
Q2 		$10.4M Sell
130,800
-184,300
-58% -$14.6M 0.02% 420
2025
Q1 		$28.3M Buy
315,100
+260,500
+477% +$24.3M 0.08% 211
2024
Q4 		$5.43M Sell
54,600
-787,800
-94% -$81.2M 0.01% 795
2024
Q3 		$95.7M Buy
842,400
+782,600
+1,309% +$93M 0.17% 96
2024
Q2 		$7.4M Sell
59,800
-277,600
-82% -$35.8M 0.02% 578
2024
Q1 		$44.5M Sell
337,400
-171,900
-34% -$21.2M 0.1% 178
2023
Q4 		$55.5M Sell
509,300
-355,400
-41% -$36.9M 0.11% 162
2023
Q3 		$89M Sell
864,700
-111,800
-11% -$12.1M 0.2% 84
2023
Q2 		$113M Buy
976,500
+86,600
+10% +$9.83M 0.25% 71
2023
Q1 		$94.7M Sell
889,900
-516,500
-37% -$55.8M 0.19% 83
2022
Q4 		$156M Sell
1,406,400
-464,200
-25% -$47.4M 0.24% 66
2022
Q3 		$161M Sell
1,870,600
-621,200
-25% -$55.5M 0.25% 60
2022
Q2 		$227M Buy
2,491,800
+12,000
+0.5% +$1.06M 0.22% 74
2022
Q1 		$203M Sell
2,479,800
-700,700
-22% -$55.2M 0.11% 52
2021
Q4 		$244M Buy
3,180,500
+1,394,400
+78% +$111M 0.28% 37
2021
Q3 		$134M Buy
1,786,100
+847,100
+90% +$64.4M 0.13% 109
2021
Q2 		$73M Buy
+939,000
New +$69.8M 0.1% 135
2021
Q1 		– Sell
-1,039,511
Closed -$81.1M – 1933
2020
Q4 		$81.1M Sell
1,039,511
-671,244
-39% -$51.3M 0.08% 190
2020
Q3 		$135M Sell
1,710,755
-125,236
-7% -$9.81M 0.1% 176
2020
Q2 		$135M Buy
1,835,991
+638,546
+53% +$48.1M 0.16% 102
2020
Q1 		$87.9M Sell
1,197,445
-1,251,941
-51% -$98.4M 0.11% 128
2019
Q4 		$213M Buy
2,449,386
+1,928,006
+370% +$158M 0.25% 62
2019
Q3 		$41.9M Buy
521,380
+189,583
+57% +$15.2M 0.05% 216
2019
Q2 		$26.5M Buy
331,797
+166,318
+101% +$12.7M 0.03% 279
2019
Q1 		$13.1M Sell
165,479
-335,570
-67% -$25.1M 0.02% 405
2018
Q4 		$36.5M Sell
501,049
-13,624
-3% -$962K 0.05% 232
2018
Q3 		$34.8M Sell
514,673
-42,234
-8% -$2.69M 0.04% 189
2018
Q2 		$32.3M Sell
556,907
-14,253
-2% -$804K 0.05% 187
2018
Q1 		$29.7M Sell
571,160
-293,335
-34% -$15.8M 0.04% 184
2017
Q4 		$46.4M Buy
864,495
+41,815
+5% +$2.32M 0.06% 144
2017
Q3 		$50.3M Sell
822,680
-319,535
-28% -$19.4M 0.08% 132
2017
Q2 		$69.9M Buy
1,142,215
+68,644
+6% +$4.18M 0.14% 102
2017
Q1 		$65.1M Buy
1,073,571
+705,409
+192% +$42.8M 0.13% 96
2016
Q4 		$20.7M Buy
368,162
+116,432
+46% +$6.81M 0.04% 264
2016
Q3 		$15M Sell
251,730
-1,277,616
-84% -$74.7M 0.03% 329
2016
Q2 		$84.1M Buy
1,529,346
+777,196
+103% +$41.4M 0.17% 81
2016
Q1 		$38M Buy
752,150
+469,924
+167% +$23M 0.08% 150
2015
Q4 		$14.2M Sell
282,226
-64,557
-19% -$3.25M 0.03% 357
2015
Q3 		$16.3M Buy
346,783
+190,841
+122% +$10.1M 0.04% 300
2015
Q2 		$8.47M Sell
155,942
-661,498
-81% -$37.1M 0.02% 538
2015
Q1 		$44.8M Buy
817,440
+802,454
+5,355% +$45.4M 0.11% 148
2014
Q4 		$812K Sell
14,986
-142,214
-90% -$7.92M ﹤0.01% 1663
2014
Q3 		$8.89M Buy
+157,200
New +$8.83M 0.03% 500
2014
Q1 		– Sell
-288,829
Closed -$13.8M – 3586
2013
Q4 		$13.8M Sell
288,829
-1,003,879
-78% -$45.9M 0.07% 236
2013
Q3 		$58.7M Sell
1,292,708
-545,170
-30% -$24.9M 0.31% 60
2013
Q2 		$81.5M Buy
+1,837,878
New +$82.1M 0.38% 51

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. 3,778 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.
  • 3,778 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.