NMIMC
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Northwestern Mutual Investment Management Company’s Monolithic Power Systems MPWR Stock Holding History

Northwestern Mutual Investment Management Company’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
2026
Q1 		$1.7M Buy
1,558
+27
+2% +$29.5K 0.03% 369
2025
Q4 		$1.39M Buy
1,531
+5
+0.3% +$4.81K 0.02% 441
2025
Q3 		$1.4M Sell
1,526
-1
-0.1% -$811 0.02% 445
2025
Q2 		$1.12M Buy
1,527
+6
+0.4% +$3.82K 0.02% 508
2025
Q1 		$882K Sell
1,521
-28
-2% -$17.6K 0.01% 597
2024
Q4 		$917K Buy
1,549
+4
+0.3% +$2.9K 0.02% 586
2024
Q3 		$1.43M Sell
1,545
-4
-0.3% -$3.45K 0.03% 400
2024
Q2 		$1.27M Buy
1,549
+24
+2% +$17.3K 0.03% 422
2024
Q1 		$1.03M Buy
1,525
+9
+0.6% +$6.01K 0.03% 527
2023
Q4 		$956K Buy
1,516
+8
+0.5% +$4.18K 0.03% 548
2023
Q3 		$697K Buy
1,508
+88
+6% +$45K 0.02% 613
2023
Q2 		$767K Buy
1,420
+14
+1% +$6.65K 0.02% 596
2023
Q1 		$704K Buy
1,406
+8
+0.6% +$3.68K 0.02% 605
2022
Q4 		$494K Sell
1,398
-254
-15% -$91.3K 0.01% 522
2022
Q3 		$600K Sell
1,652
-100
-6% -$44.5K 0.01% 542
2022
Q2 		$673K Buy
1,752
+29
+2% +$12.3K 0.02% 580
2022
Q1 		$837K Sell
1,723
-227
-12% -$98.9K 0.02% 554
2021
Q4 		$962K Sell
1,950
-11
-0.6% -$5.68K 0.02% 527
2021
Q3 		$950K Buy
1,961
+8
+0.4% +$3.64K 0.02% 504
2021
Q2 		$729K Buy
1,953
+9
+0.5% +$3.17K 0.01% 650
2021
Q1 		$687K Sell
1,944
-12,632
-87% -$4.6M 0.01% 658
2020
Q4 		$5.34M Buy
14,576
+98
+0.7% +$31.4K 0.07% 95
2020
Q3 		$3.43M Hold
14,478
– – 0.05% 133
2020
Q2 		$3.43M Buy
14,478
+443
+3% +$89.7K 0.05% 130
2020
Q1 		$2.35M Buy
14,035
+2,497
+22% +$428K 0.04% 169
2019
Q4 		$2.05M Buy
11,538
+70
+0.6% +$11.2K 0.04% 220
2019
Q3 		$1.78M Buy
11,468
+170
+2% +$25.4K 0.04% 239
2019
Q2 		$1.53M Buy
11,298
+4,274
+61% +$581K 0.04% 278
2019
Q1 		$952K Sell
7,024
-352
-5% -$46.2K 0.02% 585
2018
Q4 		$857K Buy
7,376
+41
+0.6% +$4.91K 0.01% 600
2018
Q3 		$921K Sell
7,335
-294
-4% -$41K 0.01% 657
2018
Q2 		$1.02M Sell
7,629
-302
-4% -$38.5K 0.02% 634
2018
Q1 		$918K Buy
7,931
+2,929
+59% +$347K 0.02% 668
2017
Q4 		$562K Buy
5,002
+22
+0.4% +$2.55K 0.01% 673
2017
Q3 		$531K Sell
4,980
-1,555
-24% -$158K 0.01% 682
2017
Q2 		$630K Buy
6,535
+7
+0.1% +$667 0.01% 705
2017
Q1 		$601K Buy
6,528
+79
+1% +$7K 0.01% 724
2016
Q4 		$528K Buy
6,449
+34
+0.5% +$2.73K 0.01% 743
2016
Q3 		$516K Buy
+6,415
New +$474K 0.01% 716

Other funds holding MPWR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 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 $1.61T AUM 30.72% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

Northwestern Mutual Investment Management Company's MPWR Position: Q1 2026 in Review

Northwestern Mutual Investment Management Company increased its Monolithic Power Systems (MPWR) stake by 1.8% in Q1 2026, buying an estimated $29.5K and bringing the position to 1,558 shares worth $1.7M. The position accounts for 0.03% of the portfolio, ranked #369.

Northwestern Mutual Investment Management Company first reported a position in MPWR in Q3 2016 and has held it in 39 quarters since. The position peaked at $5.34M in Q4 2020. 1,118 funds tracked by Wall St. Rank hold MPWR as of Q1 2026.

  • Northwestern Mutual Investment Management Company held 1,558 shares of Monolithic Power Systems worth $1.7M as of Q1 2026.
  • Northwestern Mutual Investment Management Company bought 27 Monolithic Power Systems shares in Q1 2026, an estimated $29.5K.
  • Monolithic Power Systems made up 0.03% of Northwestern Mutual Investment Management Company's portfolio in Q1 2026, its #369 holding.
  • Northwestern Mutual Investment Management Company first reported a position in Monolithic Power Systems in Q3 2016 and has held it in 39 quarters since.
  • Northwestern Mutual Investment Management Company's Monolithic Power Systems position peaked at $5.34M in Q4 2020.
  • 1,118 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q1 2026.

Based on Northwestern Mutual Investment Management Company's 13F filing for Q1 2026, filed 8 May 2026.