Parallax Volatility Advisers
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Parallax Volatility Advisers’s Equifax EFX Stock Holding History

Parallax Volatility Advisers’s Portfolio EFX Stock Details EFX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-1
Closed -$180 – 1571
2026
Q1 		$180 Buy
+1
New +$199 ﹤0.01% 1404
2025
Q4 		– Sell
-8,031
Closed -$2.06M – 1695
2025
Q3 		$2.06M Buy
+8,031
New +$2.02M ﹤0.01% 912
2022
Q1 		– Sell
-4,917
Closed -$1.16M – 2994
2021
Q4 		$1.44M Buy
4,917
+1,813
+58% +$505K ﹤0.01% 1762
2021
Q3 		$787K Buy
3,104
+1,888
+155% +$491K ﹤0.01% 2075
2021
Q2 		$291K Buy
+1,216
New +$272K ﹤0.01% 2355
2021
Q1 		– Sell
-168
Closed -$32K – 3334
2020
Q4 		$32K Sell
168
-20,809
-99% -$3.5M ﹤0.01% 3113
2020
Q3 		$3.29M Buy
20,977
+19,791
+1,669% +$3.24M ﹤0.01% 1502
2020
Q2 		$204K Sell
1,186
-12,054
-91% -$1.79M ﹤0.01% 2228
2020
Q1 		$1.58M Buy
+13,240
New +$1.93M ﹤0.01% 1320
2019
Q3 		– Sell
-15
Closed -$2K – 2543
2019
Q2 		$2K Buy
+15
New +$1.88K ﹤0.01% 2371
2018
Q1 		– Sell
-2,800
Closed -$330K – 2691
2017
Q4 		$330K Buy
+2,800
New +$315K ﹤0.01% 1861
2017
Q1 		– Sell
-552
Closed -$70.2K – 3756
2016
Q4 		$65K Sell
552
-3,054
-85% -$373K ﹤0.01% 2372
2016
Q3 		$485K Buy
+3,606
New +$478K ﹤0.01% 1507
2016
Q1 		– Sell
-2,333
Closed -$245K – 2740
2015
Q4 		$260K Buy
+2,333
New +$252K ﹤0.01% 1796
2015
Q1 		– Sell
-1,632
Closed -$132K – 4597
2014
Q4 		$132K Buy
1,632
+322
+25% +$24.9K ﹤0.01% 3219
2014
Q3 		$98K Sell
1,310
-657
-33% -$50K ﹤0.01% 2898
2014
Q2 		$143K Buy
1,967
+1,561
+384% +$110K ﹤0.01% 2233
2014
Q1 		$28K Buy
+406
New +$28.4K ﹤0.01% 2645

Other funds holding EFX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Harris Associates
Harris Associates Chicago, Illinois $75.4B AUM 14.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
SCP
Soroban Capital Partners New York $47.8B AUM 11.8% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Brown Advisory
Brown Advisory Baltimore, Maryland $64.6B AUM 18.98% 1-Year Est. Return

Parallax Volatility Advisers's EFX Position: Q2 2026 in Review

Parallax Volatility Advisers sold out of Equifax (EFX) in Q2 2026, closing a stake of 1 share — an estimated $180 sold.

Parallax Volatility Advisers first reported a position in EFX in Q1 2014 and held it in 18 quarters. The position peaked at $3.29M in Q3 2020. 835 funds tracked by Wall St. Rank hold EFX as of Q2 2026.

  • Parallax Volatility Advisers reported no remaining Equifax position as of Q2 2026 after selling out during the quarter.
  • Parallax Volatility Advisers sold 1 Equifax share in Q2 2026, an estimated $180.
  • Parallax Volatility Advisers first reported a position in Equifax in Q1 2014 and held it in 18 quarters.
  • Parallax Volatility Advisers's Equifax position peaked at $3.29M in Q3 2020.
  • 835 funds tracked by Wall St. Rank held Equifax as of Q2 2026.

Based on Parallax Volatility Advisers's 13F filing for Q2 2026, filed 14 Aug 2026.