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ALLIANCEBERNSTEIN L.P.

Position in MPWR — Monolithic Power Systems, Inc.

CIK 1109448 NASHVILLE, TN

Position in MPWR

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$136,282,797
+$14,258,644 QoQ
Shares Held
124,647
-7.4% QoQ
Ownership
0.254%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 80% Shared 0% None 20%

Common Shares in MPWR Over Time

Shares Held

Position Value (USD)

Position in Semiconductors

Technology · as of Mar 31, 2026

ALLIANCEBERNSTEIN L.P. holds $34,309,645,892 across 45 Semiconductors names. MPWR ranks #16 (0.4% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in MPWR

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $136,282,797 124,647
2025-12-31 $122,024,153 134,631
2025-09-30 $258,426,409 280,703
2025-06-30 $229,752,787 314,136
2025-03-31 $189,895,891 327,418
2024-12-31 $203,072,623 343,202
2024-09-30 $411,370,142 444,965
2024-06-30 $409,468,616 498,331
2024-03-31 $198,872,221 293,573
2023-12-31 $206,411,400 327,232
2023-09-30 $166,144,902 359,621
2023-06-30 $176,547,164 326,800
2023-03-31 $226,321,663 452,155
2022-12-31 $187,687,701 530,776
2022-09-30 $164,105,625 451,584
2022-06-30 $198,075,542 515,768
2022-03-31 $292,614,914 602,485
2021-12-31 $308,131,451 624,595
2021-09-30 $305,826,294 630,986
2021-06-30 $265,391,122 710,647
2021-03-31 $230,788,826 653,404
2020-12-31 $209,659,716 572,481
2020-09-30 $76,681,085 274,243
2020-06-30 $119,949,729 506,117
2020-03-31 $86,691,865 517,687