Parallax Volatility Advisers
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Parallax Volatility Advisers’s Blackrock BLK Stock Holding History

Parallax Volatility Advisers’s Portfolio BLK Stock Details BLK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-6,652
Closed -$7M – 1488
2025
Q4 		$7.12M Sell
6,652
-784
-11% -$857K 0.01% 568
2025
Q3 		$8.67M Buy
+7,436
New +$8.31M 0.01% 511
2025
Q2 		– Sell
-3,501
Closed -$3.31M – 1572
2025
Q1 		$3.31M Sell
3,501
-14,080
-80% -$13.8M 0.01% 731
2024
Q4 		$18M Buy
+17,581
New +$17.8M 0.04% 370
2024
Q3 		– Sell
-4,250
Closed -$3.68M – 2026
2024
Q2 		$3.35M Sell
4,250
-16,947
-80% -$13.2M 0.01% 851
2024
Q1 		$17.7M Buy
21,197
+12,323
+139% +$9.9M 0.04% 350
2023
Q4 		$7.2M Buy
8,874
+6,606
+291% +$4.61M 0.01% 704
2023
Q3 		$1.47M Buy
+2,268
New +$1.58M ﹤0.01% 1216
2022
Q4 		– Sell
-14,190
Closed -$9.48M – 2875
2022
Q3 		$7.81M Buy
14,190
+7,019
+98% +$4.59M 0.01% 844
2022
Q2 		$4.37M Buy
7,171
+4,642
+184% +$3.02M ﹤0.01% 1014
2022
Q1 		$1.93M Buy
+2,529
New +$1.98M ﹤0.01% 1375
2020
Q4 		– Sell
-18,232
Closed -$10.3M – 2470
2020
Q3 		$10.3M Sell
18,232
-15,751
-46% -$8.99M 0.01% 986
2020
Q2 		$18.5M Sell
33,983
-29,797
-47% -$15M 0.02% 549
2020
Q1 		$28.1M Buy
63,780
+60,916
+2,127% +$30M 0.04% 319
2019
Q4 		$1.44M Sell
2,864
-465
-14% -$221K ﹤0.01% 1373
2019
Q3 		$1.48M Buy
3,329
+2,186
+191% +$973K ﹤0.01% 1249
2019
Q2 		$536K Buy
1,143
+1,060
+1,277% +$479K ﹤0.01% 1478
2019
Q1 		$35K Sell
83
-4,080
-98% -$1.71M ﹤0.01% 2429
2018
Q4 		$1.64M Buy
+4,163
New +$1.71M ﹤0.01% 1130
2018
Q3 		– Sell
-759
Closed -$369K – 2595
2018
Q2 		$379K Buy
+759
New +$401K ﹤0.01% 1318
2018
Q1 		– Sell
-10,261
Closed -$5.27M – 2330
2017
Q4 		$5.27M Buy
+10,261
New +$4.99M 0.01% 588
2017
Q3 		– Sell
-1,548
Closed -$654K – 2112
2017
Q2 		$654K Buy
+1,548
New +$617K ﹤0.01% 1163
2017
Q1 		– Sell
-464
Closed -$177K – 3564
2016
Q4 		$177K Buy
464
+171
+58% +$62.7K ﹤0.01% 1940
2016
Q3 		$106K Sell
293
-1,364
-82% -$496K ﹤0.01% 2103
2016
Q2 		$568K Buy
+1,657
New +$582K ﹤0.01% 1407
2016
Q1 		– Sell
-1,300
Closed -$412K – 2522
2015
Q4 		$443K Sell
1,300
-4,006
-75% -$1.36M ﹤0.01% 1592
2015
Q3 		$1.58M Buy
5,306
+2,248
+74% +$725K ﹤0.01% 1121
2015
Q2 		$1.06M Buy
3,058
+803
+36% +$293K ﹤0.01% 1320
2015
Q1 		$825K Sell
2,255
-4,165
-65% -$1.51M ﹤0.01% 1342
2014
Q4 		$2.3M Buy
6,420
+1,872
+41% +$640K 0.01% 1007
2014
Q3 		$1.49M Buy
4,548
+2,986
+191% +$961K ﹤0.01% 1257
2014
Q2 		$499K Buy
1,562
+1,147
+276% +$352K ﹤0.01% 1389
2014
Q1 		$131K Buy
415
+365
+730% +$112K ﹤0.01% 1706
2013
Q4 		$16K Sell
50
-18
-26% -$5.37K ﹤0.01% 2802
2013
Q3 		$18K Buy
+68
New +$18.5K ﹤0.01% 2330

Other funds holding BLK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Temasek Holdings
Temasek Holdings Singapore $37.3B AUM 12.6% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

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

Parallax Volatility Advisers sold out of Blackrock (BLK) in Q1 2026, closing a stake of 6,652 shares — an estimated $7M sold.

Parallax Volatility Advisers first reported a position in BLK in Q3 2013 and held it in 35 quarters. The position peaked at $28.1M in Q1 2020. 2,334 funds tracked by Wall St. Rank hold BLK as of Q1 2026.

  • Parallax Volatility Advisers reported no remaining Blackrock position as of Q1 2026 after selling out during the quarter.
  • Parallax Volatility Advisers sold 6,652 Blackrock shares in Q1 2026, an estimated $7M.
  • Parallax Volatility Advisers first reported a position in Blackrock in Q3 2013 and held it in 35 quarters.
  • Parallax Volatility Advisers's Blackrock position peaked at $28.1M in Q1 2020.
  • 2,334 funds tracked by Wall St. Rank held Blackrock as of Q1 2026.

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