Which funds own POWI
Power Integratio in the Q2 2026 filings. None of the 91 current managers lists it among its largest positions this quarter. What is here is what they held before selling out.
- Managers holding
- 0
- at least, of 91 current
- Combined value
- $0
- as reported
- Opened
- 0
- new this quarter
- Added to
- 0
- already held
- Trimmed or sold out
- 2
- 2 sold out entirely
Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.
Sold out of this quarter
Valued at what the position was worth in the previous filing, because by this one it is gone.
- Hudson Bay Capital Management LP · Multi-strategy$51m held before
- Marshall Wace LLP · Quantitative$18m held before
Ownership through time
At least 3 of the 95 managers whose filings are on file listed POWI in Q2 2026, against 3 in Q2 2013. 1 manager fewer than in Q1 2026: 1 started a position; 1 sold out, by its own filing; 1 no longer listed it among the positions read, which can mean a holding below the listed range, a filing that reported no holdings, or a filing not yet made.
Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.
- Q2 2013: 3
- Q3 2013: 4
- Q4 2013: 5
- Q1 2014: 5
- Q2 2014: 2
- Q3 2014: 2
- Q4 2014: 2
- Q1 2015: 3
- Q2 2015: 2
- Q3 2015: 2
- Q4 2015: 3
- Q1 2016: 2
- Q2 2016: 3
- Q3 2016: 2
- Q4 2016: 2
- Q1 2017: 2
- Q2 2017: 1
- Q3 2017: 1
- Q4 2017: 2
- Q1 2018: 2
- Q2 2018: 2
- Q3 2018: 2
- Q4 2018: 2
- Q1 2019: 2
- Q2 2019: 2
- Q3 2019: 2
- Q4 2019: 2
- Q1 2020: 5
- Q2 2020: 3
- Q3 2020: 3
- Q4 2020: 4
- Q1 2021: 3
- Q2 2021: 4
- Q3 2021: 5
- Q4 2021: 6
- Q1 2022: 6
- Q2 2022: 6
- Q3 2022: 8
- Q4 2022: 5
- Q1 2023: 6
- Q2 2023: 5
- Q3 2023: 4
- Q4 2023: 4
- Q1 2024: 6
- Q2 2024: 7
- Q3 2024: 6
- Q4 2024: 3
- Q1 2025: 2
- Q2 2025: 3
- Q3 2025: 4
- Q4 2025: 3
- Q1 2026: 4
- Q2 2026: 3
- Q2 2013: $127m
- Q3 2013: $226m
- Q4 2013: $229m
- Q1 2014: $384m
- Q2 2014: $167m
- Q3 2014: $174m
- Q4 2014: $175m
- Q1 2015: $179m
- Q2 2015: $152m
- Q3 2015: $142m
- Q4 2015: $153m
- Q1 2016: $151m
- Q2 2016: $155m
- Q3 2016: $184m
- Q4 2016: $198m
- Q1 2017: $205m
- Q2 2017: $204m
- Q3 2017: $214m
- Q4 2017: $220m
- Q1 2018: $199m
- Q2 2018: $212m
- Q3 2018: $186m
- Q4 2018: $184m
- Q1 2019: $206m
- Q2 2019: $230m
- Q3 2019: $255m
- Q4 2019: $272m
- Q1 2020: $234m
- Q2 2020: $409m
- Q3 2020: $268m
- Q4 2020: $684m
- Q1 2021: $525m
- Q2 2021: $529m
- Q3 2021: $838m
- Q4 2021: $623m
- Q1 2022: $593m
- Q2 2022: $475m
- Q3 2022: $448m
- Q4 2022: $475m
- Q1 2023: $518m
- Q2 2023: $518m
- Q3 2023: $427m
- Q4 2023: $437m
- Q1 2024: $400m
- Q2 2024: $412m
- Q3 2024: $429m
- Q4 2024: $404m
- Q1 2025: $199m
- Q2 2025: $241m
- Q3 2025: $194m
- Q4 2025: $160m
- Q1 2026: $429m
- Q2 2026: $535m
Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.
Started in Q2 2026
Largest increases, by shares
- MFS Investment Managementnew: 767,672 shares+$64m
- Wellington Management Group LLP3,356,153 to 3,595,855 shares+$20m
Largest decreases, by shares
- Neuberger Berman Group LLC3,933,099 to 2,020,390 shares-$160m
Left it
- Hudson Bay Capital Management LPwas $51m
| Manager | Value over time | First listed | Largest | Q2 2026 |
|---|---|---|---|---|
| Wellington Management Group LLP | Q2 2020 | $301m | $301m | |
| Neuberger Berman Group LLC | Q2 2013 | $380m | $169m | |
| MFS Investment Management | Q2 2026 | $64m | $64m | |
| Invesco Ltd | Q1 2014 | $202m | last listed Q3 2021 | |
| AllianceBernstein LP | Q3 2013 | $63m | last listed Q1 2014 | |
| Hudson Bay Capital Management LP | Q1 2026 | $51m | last listed Q1 2026 | |
| Capital Research Global Investors | Q2 2013 | $41m | last listed Q1 2014 | |
| Woodline Partners LP | Q4 2021 | $29m | last listed Q2 2024 | |
| Voloridge Investment Management LLC | Q1 2024 | $25m | last listed Q4 2025 | |
| Two Sigma Advisers LP | Q3 2021 | $19m | last listed Q4 2022 | |
| Arrowstreet Capital LP | Q1 2017 | $18m | last listed Q1 2017 | |
| Man Group PLC | Q3 2022 | $15m | last listed Q1 2023 | |
| Tudor Investment Corp | Q2 2021 | $12m | last listed Q3 2024 |
What POWI is worth
Knowing who owns it is half the question. The other half is what it is worth against the companies it trades beside, which is the one an interviewer will follow up with.
Build the comp set around POWI →How much of the picture this is
A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.
What to do with a name the funds are buying
Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.
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The holdings, every quarter, and the week between
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