ALGM in the 13F filings
Allegro Microsystems Inc · CUSIP 01749D105
- Quarter end
- 30 Sep 2024
- the date the book describes
- Filed
- 5 Nov 2026
- latest of these filings; the earliest 12 Nov 2024
- Managers listing it
- 7
- at least, of 95 tracked, among listed positions
- Comparable managers
- 94
- filed both Q2 2024 and Q3 2024; 6 listed it in both
- Shares listed
- 38,938,004
- combined, among listed positions
- Reported value
- $907m
- combined, at the quarter end
Among the 94 comparable managers: 6 buyers (opened or added shares) and 1 seller (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.
Managers listing ALGM in Q3 2024
7 of 7 holders
| Action | Filing | |||||
|---|---|---|---|---|---|---|
| Fidelity (FMR LLC) | 28,253,811 | $658m | under 0.1% | Added | +8,534,089 | 5 Nov 2026 (the filing on sec.gov) |
| Capital Research Global Investors | 5,414,432 | $126m | under 0.1% | New | new | 13 Nov 2024 (the filing on sec.gov) |
| Woodline Partners LP | 1,548,132 | $36m | 0.30% | Added | +104,362 | 14 Nov 2024 (the filing on sec.gov) |
| Artisan Partners LP | 1,518,095 | $35m | 0.05% | Trimmed | -88,696 | 12 Nov 2024 (the filing on sec.gov) |
| Two Sigma Investments LP | 1,379,703 | $32m | 0.07% | Added | +514,106 | 14 Nov 2024 (the filing on sec.gov) |
| Two Sigma Advisers LP | 627,000 | $15m | under 0.1% | Added | +112,400 | 14 Nov 2024 (the filing on sec.gov) |
| Holocene Advisors LP | 196,831 | $4.6m | under 0.1% | Added | +118,816 | 14 Nov 2024 (the filing on sec.gov) |
Largest increases and reductions, by shares
Increases
- Fidelity (FMR LLC)existing position · 28,253,811 shares now+8,534,089
- Capital Research Global Investorsnew position · 5,414,432 shares now+5,414,432
- Two Sigma Investments LPexisting position · 1,379,703 shares now+514,106
- Holocene Advisors LPexisting position · 196,831 shares now+118,816
- Two Sigma Advisers LPexisting position · 627,000 shares now+112,400
Reductions
- Artisan Partners LPexisting position · 1,518,095 shares now-88,696
New positions and exits
New (1)
Exited (0)
No exit shown by a manager’s own filing.
Ownership over time
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
ALGM and NVDA →ALGM and AVGO →ALGM and MU →Choose a stock to compare with ALGM →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own ALGM, latest filings →Back to the 13F Explorer →