Parallax Volatility Advisers
BRK.B icon

Parallax Volatility Advisers’s Berkshire Hathaway Class B BRK.B Stock Holding History

Parallax Volatility Advisers’s Portfolio BRK.B Stock Details BRK.B Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$106M Sell
222,200
-51,900
-19% -$25.5M 0.28% 62
2025
Q4 		$138M Buy
274,100
+217,900
+388% +$108M 0.27% 61
2025
Q3 		$28.3M Sell
56,200
-10,000
-15% -$4.84M 0.04% 228
2025
Q2 		$32.2M Buy
66,200
+30,700
+86% +$15.6M 0.07% 201
2025
Q1 		$18.9M Sell
35,500
-70,500
-67% -$34.3M 0.05% 281
2024
Q4 		$48M Buy
106,000
+81,800
+338% +$37.8M 0.09% 164
2024
Q3 		$11.1M Buy
24,200
+100
+0.4% +$44.2K 0.02% 514
2024
Q2 		$9.8M Sell
24,100
-17,700
-42% -$7.23M 0.02% 494
2024
Q1 		$17.6M Sell
41,800
-28,800
-41% -$11.3M 0.04% 351
2023
Q4 		$25.2M Buy
70,600
+3,100
+5% +$1.09M 0.05% 324
2023
Q3 		$23.6M Sell
67,500
-41,700
-38% -$14.8M 0.05% 280
2023
Q2 		$37.2M Sell
109,200
-44,700
-29% -$14.6M 0.08% 202
2023
Q1 		$47.5M Sell
153,900
-138,200
-47% -$42.6M 0.1% 200
2022
Q4 		$90.2M Buy
292,100
+67,400
+30% +$20M 0.14% 156
2022
Q3 		$60M Sell
224,700
-83,500
-27% -$23.8M 0.09% 236
2022
Q2 		$84.1M Sell
308,200
-2,900
-0.9% -$910K 0.08% 166
2022
Q1 		$111M Buy
+311,100
New +$101M 0.06% 119
2020
Q4 		– Sell
-1,487,000
Closed -$317M – 2488
2020
Q3 		$317M Buy
1,487,000
+640,800
+76% +$131M 0.23% 66
2020
Q2 		$151M Buy
846,200
+577,700
+215% +$105M 0.18% 92
2020
Q1 		$49.1M Sell
268,500
-277,900
-51% -$59.1M 0.06% 212
2019
Q4 		$124M Buy
546,400
+159,900
+41% +$34.7M 0.14% 97
2019
Q3 		$80.4M Buy
386,500
+360,500
+1,387% +$74.3M 0.09% 123
2019
Q2 		$5.54M Buy
26,000
+20,000
+333% +$4.14M 0.01% 693
2019
Q1 		$1.21M Sell
6,000
-74,600
-93% -$15.1M ﹤0.01% 1190
2018
Q4 		$16.5M Buy
80,600
+40,600
+102% +$8.48M 0.02% 387
2018
Q3 		$8.56M Sell
40,000
-61,500
-61% -$12.6M 0.01% 524
2018
Q2 		$18.9M Sell
101,500
-50,000
-33% -$9.75M 0.03% 284
2018
Q1 		$30.2M Buy
+151,500
New +$31.1M 0.04% 182
2017
Q1 		– Sell
-94,300
Closed -$15.4M – 3576
2016
Q4 		$15.4M Hold
94,300
– – 0.03% 339
2016
Q3 		$13.6M Hold
94,300
– – 0.03% 352
2016
Q2 		$13.7M Sell
94,300
-2,800
-3% -$400K 0.03% 360
2016
Q1 		$13.8M Sell
97,100
-234,800
-71% -$31.1M 0.03% 301
2015
Q4 		$43.8M Sell
331,900
-151,600
-31% -$20.3M 0.09% 142
2015
Q3 		$63M Buy
483,500
+455,600
+1,633% +$62.4M 0.14% 105
2015
Q2 		$3.8M Sell
27,900
-204,000
-88% -$29.1M 0.01% 817
2015
Q1 		$33.5M Sell
231,900
-391,700
-63% -$57.6M 0.08% 195
2014
Q4 		$93.6M Buy
623,600
+67,700
+12% +$9.77M 0.27% 72
2014
Q3 		$76.8M Buy
555,900
+543,400
+4,347% +$72.4M 0.24% 88
2014
Q2 		$1.58M Sell
12,500
-108,500
-90% -$13.7M 0.01% 875
2014
Q1 		$15.1M Sell
121,000
-556,800
-82% -$65.1M 0.09% 183
2013
Q4 		$80.4M Buy
677,800
+410,000
+153% +$47.4M 0.39% 55
2013
Q3 		$30.4M Hold
267,800
– – 0.16% 120
2013
Q2 		$30M Buy
+267,800
New +$29.5M 0.14% 124

Other funds holding BRK.B

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
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Gates Foundation Trust
Gates Foundation Trust Kirkland, Washington $31.7B AUM 20.52% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Parallax Volatility Advisers's BRK.B Position: Q1 2026 in Review

Parallax Volatility Advisers increased its Berkshire Hathaway Class B (BRK.B) stake by 992% in Q1 2026, buying an estimated $14.9M and bringing the position to 33,311 shares worth $15.9M. The position accounts for 0.04% of the portfolio, ranked #301.

Parallax Volatility Advisers first reported a position in BRK.B in Q2 2013 and has held it in 38 quarters since. The position peaked at $91.5M in Q4 2023. 4,856 funds tracked by Wall St. Rank hold BRK.B as of Q1 2026.

  • Parallax Volatility Advisers held 33,311 shares of Berkshire Hathaway Class B worth $15.9M as of Q1 2026.
  • Parallax Volatility Advisers bought 30,261 Berkshire Hathaway Class B shares in Q1 2026, an estimated $14.9M.
  • Berkshire Hathaway Class B made up 0.04% of Parallax Volatility Advisers's portfolio in Q1 2026, its #301 holding.
  • Parallax Volatility Advisers first reported a position in Berkshire Hathaway Class B in Q2 2013 and has held it in 38 quarters since.
  • Parallax Volatility Advisers's Berkshire Hathaway Class B position peaked at $91.5M in Q4 2023.
  • 4,856 funds tracked by Wall St. Rank held Berkshire Hathaway Class B as of Q1 2026.

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