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
Q1 		$346K Buy
+1,800
New +$357K ﹤0.01% 1103
2025
Q4 		– Sell
-22,400
Closed -$5.75M – 1696
2025
Q3 		$5.75M Buy
+22,400
New +$5.63M 0.01% 638
2024
Q1 		– Sell
-2,900
Closed -$717K – 1961
2023
Q4 		$717K Buy
2,900
+800
+38% +$162K ﹤0.01% 1511
2023
Q3 		$385K Buy
2,100
+1,700
+425% +$347K ﹤0.01% 1670
2023
Q2 		$94.1K Sell
400
-5,500
-93% -$1.16M ﹤0.01% 2004
2023
Q1 		$1.2M Sell
5,900
-5,100
-46% -$1.06M ﹤0.01% 1424
2022
Q4 		$2.14M Buy
11,000
+7,700
+233% +$1.41M ﹤0.01% 1375
2022
Q3 		$565K Sell
3,300
-3,300
-50% -$646K ﹤0.01% 1940
2022
Q2 		$1.21M Buy
6,600
+5,800
+725% +$1.16M ﹤0.01% 1569
2022
Q1 		$6K Sell
800
-2,800
-78% -$660K ﹤0.01% 2702
2021
Q4 		$1.05M Sell
3,600
-2,500
-41% -$696K ﹤0.01% 1249
2021
Q3 		$1.55M Buy
+6,100
New +$1.59M ﹤0.01% 1207
2020
Q4 		– Sell
-54,100
Closed -$8.49M – 2853
2020
Q3 		$8.49M Buy
54,100
+43,200
+396% +$7.08M 0.01% 1074
2020
Q2 		$1.87M Sell
10,900
-5,600
-34% -$830K ﹤0.01% 1489
2020
Q1 		$1.98M Buy
+16,500
New +$2.4M ﹤0.01% 1239
2019
Q2 		– Sell
-400
Closed -$47K – 2793
2019
Q1 		$47K Buy
+400
New +$42.7K ﹤0.01% 2314
2016
Q4 		– Sell
-10,400
Closed -$1.4M – 3272
2016
Q3 		$1.4M Buy
10,400
+2,000
+24% +$265K ﹤0.01% 1122
2016
Q2 		$1.08M Buy
8,400
+7,900
+1,580% +$957K ﹤0.01% 1161
2016
Q1 		$57K Sell
500
-2,500
-83% -$263K ﹤0.01% 2113
2015
Q4 		$334K Buy
+3,000
New +$324K ﹤0.01% 1699
2015
Q3 		– Sell
-4,000
Closed -$388K – 3119
2015
Q2 		$388K Buy
+4,000
New +$390K ﹤0.01% 1747
2014
Q4 		– Sell
-2,400
Closed -$179K – 5166
2014
Q3 		$179K Buy
2,400
+1,200
+100% +$91.4K ﹤0.01% 2541
2014
Q2 		$87K Sell
1,200
-1,700
-59% -$119K ﹤0.01% 2597
2014
Q1 		$198K Buy
+2,900
New +$203K ﹤0.01% 1470

Other funds holding EFX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Harris Associates
Harris Associates Chicago, Illinois $75B AUM 11.27% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
SCP
Soroban Capital Partners New York $51.8B AUM 21.41% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Brown Advisory
Brown Advisory Baltimore, Maryland $60.9B AUM 15.24% 1-Year Est. Return

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

Parallax Volatility Advisers opened a new position in Equifax (EFX) in Q1 2026: 1 share worth $180. The stake represents ﹤0.01% of the portfolio and ranks #1404 among its holdings. This is a return to the name: Parallax Volatility Advisers previously reported a position in EFX as recently as Q3 2025.

Parallax Volatility Advisers first reported a position in EFX in Q1 2014 and has held it in 16 quarters since. The position peaked at $3.29M in Q3 2020. 870 funds tracked by Wall St. Rank hold EFX as of Q1 2026.

  • Parallax Volatility Advisers held 1 share of Equifax worth $180 as of Q1 2026.
  • Equifax was a new Parallax Volatility Advisers position in Q1 2026.
  • Equifax made up ﹤0.01% of Parallax Volatility Advisers's portfolio in Q1 2026, its #1404 holding.
  • Parallax Volatility Advisers first reported a position in Equifax in Q1 2014 and has held it in 16 quarters since.
  • Parallax Volatility Advisers's Equifax position peaked at $3.29M in Q3 2020.
  • 870 funds tracked by Wall St. Rank held Equifax as of Q1 2026.

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