Parallax Volatility Advisers
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Parallax Volatility Advisers’s Monolithic Power Systems MPWR Stock Holding History

Parallax Volatility Advisers’s Portfolio MPWR Stock Details MPWR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q2 		– Sell
-4,300
Closed -$2.49M – 1722
2025
Q1 		$2.49M Sell
4,300
-17,800
-81% -$11.2M 0.01% 809
2024
Q4 		$13.1M Buy
+22,100
New +$16M 0.03% 481
2024
Q1 		– Sell
-500
Closed -$315K – 2162
2023
Q4 		$315K Sell
500
-1,900
-79% -$993K ﹤0.01% 1694
2023
Q3 		$1.11M Buy
+2,400
New +$1.23M ﹤0.01% 1319
2023
Q2 		– Sell
-300
Closed -$150K – 2723
2023
Q1 		$150K Buy
+300
New +$138K ﹤0.01% 2047
2022
Q4 		– Sell
-200
Closed -$73K – 3119
2022
Q3 		$73K Buy
200
+100
+100% +$44.5K ﹤0.01% 2549
2022
Q2 		$38K Buy
+100
New +$42.2K ﹤0.01% 2510
2021
Q3 		– Sell
-35,700
Closed -$13.3M – 2066
2021
Q2 		$13.3M Buy
+35,700
New +$12.6M 0.02% 454
2018
Q4 		– Sell
-35,000
Closed -$4.39M – 3552
2018
Q3 		$4.39M Buy
+35,000
New +$4.88M 0.01% 759
2017
Q2 		– Sell
-1,500
Closed -$138K – 3320
2017
Q1 		$138K Buy
+1,500
New +$133K ﹤0.01% 2120
2015
Q2 		– Sell
-1,400
Closed -$74K – 4451
2015
Q1 		$74K Sell
1,400
-2,500
-64% -$126K ﹤0.01% 2727
2014
Q4 		$194K Buy
3,900
+1,300
+50% +$58.4K ﹤0.01% 2868
2014
Q3 		$115K Buy
2,600
+2,000
+333% +$88K ﹤0.01% 2799
2014
Q2 		$25K Buy
+600
New +$23.3K ﹤0.01% 3370

Other funds holding MPWR

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

Parallax Volatility Advisers's MPWR Position: Q4 2024 in Review

Parallax Volatility Advisers sold out of Monolithic Power Systems (MPWR) in Q4 2024, closing a stake of 153 shares — an estimated $111K sold.

Parallax Volatility Advisers first reported a position in MPWR in Q3 2013 and held it in 21 quarters. The position peaked at $3.35M in Q3 2022. 863 funds tracked by Wall St. Rank hold MPWR as of Q4 2024.

  • Parallax Volatility Advisers reported no remaining Monolithic Power Systems position as of Q4 2024 after selling out during the quarter.
  • Parallax Volatility Advisers sold 153 Monolithic Power Systems shares in Q4 2024, an estimated $111K.
  • Parallax Volatility Advisers first reported a position in Monolithic Power Systems in Q3 2013 and held it in 21 quarters.
  • Parallax Volatility Advisers's Monolithic Power Systems position peaked at $3.35M in Q3 2022.
  • 863 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q4 2024.

Based on Parallax Volatility Advisers's 13F filing for Q4 2024, filed 14 Feb 2025.