Parallax Volatility Advisers
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Parallax Volatility Advisers’s Comfort Systems FIX Stock Holding History

Parallax Volatility Advisers’s Portfolio FIX Stock Details FIX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.98M Buy
+1,000
New +$1.81M ﹤0.01% 804
2015
Q4 		– Sell
-34,300
Closed -$935K – 3170
2015
Q3 		$935K Hold
34,300
– – ﹤0.01% 1313
2015
Q2 		$787K Buy
+34,300
New +$754K ﹤0.01% 1433
2014
Q1 		– Sell
-500
Closed -$10K – 3451
2013
Q4 		$10K Buy
+500
New +$9.46K ﹤0.01% 2955

Other funds holding FIX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

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

Parallax Volatility Advisers opened a new position in Comfort Systems (FIX) in Q2 2026: 610 shares worth $1.21M. The stake represents ﹤0.01% of the portfolio and ranks #917 among its holdings. This is a return to the name: Parallax Volatility Advisers previously reported a position in FIX as recently as Q4 2018.

Parallax Volatility Advisers first reported a position in FIX in Q4 2013 and has held it in 6 quarters since. 1,351 funds tracked by Wall St. Rank hold FIX as of Q2 2026.

  • Parallax Volatility Advisers held 610 shares of Comfort Systems worth $1.21M as of Q2 2026.
  • Comfort Systems was a new Parallax Volatility Advisers position in Q2 2026.
  • Comfort Systems made up ﹤0.01% of Parallax Volatility Advisers's portfolio in Q2 2026, its #917 holding.
  • Parallax Volatility Advisers first reported a position in Comfort Systems in Q4 2013 and has held it in 6 quarters since.
  • 1,351 funds tracked by Wall St. Rank held Comfort Systems as of Q2 2026.

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