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 		$327K Buy
+1,700
New +$338K ﹤0.01% 1112
2024
Q1 		– Sell
-50,600
Closed -$12.5M – 1960
2023
Q4 		$12.5M Sell
50,600
-500
-1% -$101K 0.03% 526
2023
Q3 		$9.36M Buy
51,100
+800
+2% +$163K 0.02% 558
2023
Q2 		$11.8M Buy
50,300
+43,800
+674% +$9.22M 0.03% 491
2023
Q1 		$1.32M Sell
6,500
-6,000
-48% -$1.25M ﹤0.01% 1384
2022
Q4 		$2.43M Buy
12,500
+500
+4% +$91.4K ﹤0.01% 1332
2022
Q3 		$2.06M Sell
12,000
-5,700
-32% -$1.12M ﹤0.01% 1420
2022
Q2 		$3.23M Sell
17,700
-31,200
-64% -$6.24M ﹤0.01% 1147
2022
Q1 		$392K Buy
48,900
+47,800
+4,345% +$11.3M ﹤0.01% 1987
2021
Q4 		$323K Buy
+1,100
New +$306K ﹤0.01% 1551
2020
Q4 		– Sell
-400
Closed -$62K – 2851
2020
Q3 		$62K Sell
400
-300
-43% -$49.1K ﹤0.01% 2810
2020
Q2 		$120K Buy
700
+300
+75% +$44.4K ﹤0.01% 2350
2020
Q1 		$48K Buy
+400
New +$58.2K ﹤0.01% 2261
2019
Q2 		– Sell
-400
Closed -$47K – 2792
2019
Q1 		$47K Buy
+400
New +$42.7K ﹤0.01% 2313
2017
Q4 		– Sell
-5,000
Closed -$530K – 4125
2017
Q3 		$530K Buy
5,000
+3,000
+150% +$397K ﹤0.01% 1237
2017
Q2 		$275K Sell
2,000
-2,000
-50% -$275K ﹤0.01% 1373
2017
Q1 		$546K Hold
4,000
– – ﹤0.01% 1446
2016
Q4 		$472K Buy
4,000
+2,100
+111% +$257K ﹤0.01% 1539
2016
Q3 		$256K Sell
1,900
-5,200
-73% -$689K ﹤0.01% 1755
2016
Q2 		$912K Buy
7,100
+6,100
+610% +$739K ﹤0.01% 1227
2016
Q1 		$114K Buy
1,000
+500
+100% +$52.6K ﹤0.01% 1933
2015
Q4 		$56K Buy
+500
New +$54K ﹤0.01% 2297
2015
Q3 		– Sell
-16,800
Closed -$1.63M – 3118
2015
Q2 		$1.63M Buy
+16,800
New +$1.64M ﹤0.01% 1153
2014
Q2 		– Sell
-600
Closed -$41K – 4101
2014
Q1 		$41K Buy
+600
New +$42K ﹤0.01% 2418

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.