Allegro MicroSystems Ownership | Who Owns Allegro MicroSystems?
Allegro MicroSystems Ownership Summary
Allegro MicroSystems is owned by 13.33% institutional investors, 33.18% insiders, and 53.49% retail investors. Fmr is the largest institutional shareholder, holding 14.81% of ALGM shares. Fidelity Select Semiconductors is the top mutual fund, with 8.90% of its assets in Allegro MicroSystems shares.
ALGM Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Allegro MicroSystems | 13.33% | 33.18% | 53.49% |
| Sector | Technology Stocks | 35.91% | 15.14% | 48.96% |
| Idea | Semiconductor Stocks List | 48.16% | 6.95% | 44.89% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Fmr | 27.42M | 14.81% | $864.59M |
| Vanguard group | 14.20M | 7.67% | $374.66M |
| Blackrock funding, inc. /de | 12.49M | 6.75% | $393.96M |
| Capital research global investors | 12.44M | 6.72% | $392.09M |
| Invesco | 8.75M | 4.73% | $275.93M |
| Jpmorgan chase | 8.65M | 4.67% | $242.60M |
| Blackrock | 6.63M | 3.45% | $187.36M |
| State street | 5.23M | 2.82% | $164.84M |
| Clearbridge investments | 2.86M | 1.55% | $90.29M |
| Geode capital management | 2.46M | 1.33% | $77.48M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| S squared | 457.45K | 5.46% | $14.42M |
| Lightrock netherlands b.v. | 507.99K | 3.42% | $16.02M |
| Aperture investors | 709.67K | 2.83% | $22.38M |
| Talos eurisko asset management lp | 493.17K | 2.66% | $15.55M |
| Roubaix capital | 169.99K | 2.50% | $5.36M |
| G2 investment partners management | 208.57K | 1.62% | $6.58M |
| Kettle hill capital management | 181.53K | 1.43% | $5.72M |
| Pier capital | 226.57K | 1.18% | $7.14M |
| Sirios capital management l p | 298.42K | 1.14% | $9.41M |
| Sphera management technology funds | 57.15K | 1.01% | $1.80M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fmr | 27.42M | 0.05% | 3.79M |
| Norges bank | 1.46M | 0.00% | 1.46M |
| Jpmorgan chase | 8.65M | 0.02% | 1.30M |
| Invesco | 8.75M | 0.04% | 1.10M |
| Kennedy capital management | 910.04K | 0.61% | 865.18K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Macquarie group | - | - | -2.20M |
| Citadel advisors | 399.44K | 0.00% | -2.16M |
| Analog century management lp | - | - | -1.89M |
| Artisan partners limited partnership | - | - | -1.43M |
| Adage capital partners gp | 1.46M | 0.07% | -1.34M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 1.46M | 0.00% | 1.46M | $38.46M |
| Vanguard fiduciary trust | 765.89K | 0.01% | 765.89K | $24.15M |
| Aperture investors | 709.67K | 2.83% | 709.67K | $22.38M |
| Lord, abbett | 530.46K | 0.05% | 530.46K | $16.73M |
| Scout investments | 389.39K | 0.30% | 389.39K | $11.00M |
Sold Out
| Holder | Change |
|---|---|
| Financial gravity asset management | -1.00 |
| Jfs wealth advisors | -1.00 |
| Claris advisors, llc / mo / | -2.00 |
| Bay harbor wealth management | -3.00 |
| Eastern bank | -3.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 156 | -49.84% | 24,676,223 | -81.93% | 13 | 0.25% | 89 | -33.58% | 37 | -69.42% |
| Dec 31, 2025 | 93 | -70.48% | 18,824,783 | -86.15% | 10 | 0.19% | 31 | -78.91% | 41 | -62.04% |
| Sep 30, 2025 | 113 | -61.17% | 29,584,099 | -78.76% | 16 | 0.28% | 45 | -70.20% | 45 | -54.55% |
| Jun 30, 2025 | 297 | -4.81% | 145,898,259 | -6.38% | 79 | 1.10% | 152 | -13.64% | 101 | 27.85% |
| Mar 31, 2025 | 313 | 12.59% | 156,307,245 | 9.92% | 84 | 1.42% | 176 | 35.38% | 81 | -27.03% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Fidelity Select Semiconductors | 16.58M | 8.90% | - |
| Capital Group World Growth & Inc Cmp | 5.93M | 3.20% | - |
| American Funds Capital World Gr&Inc A | 5.93M | 3.20% | - |
| American Funds SMALLCAP World A | 5.65M | 3.05% | -608.03K |
| Invesco Small Cap Value A | 4.44M | 2.40% | 969.19K |
| iShares Core S&P Mid-Cap ETF | 4.21M | 2.26% | 792.00 |
| Vanguard US Total Market Shares ETF | 4.00M | 2.17% | 890.47K |
| Vanguard Total Stock Mkt Idx Inv | 3.85M | 2.08% | 10.23K |
| Vanguard Information Technology ETF | 3.07M | 1.66% | -40.05K |
| Vanguard Small Cap Index | 2.78M | 1.50% | -6.93K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jun 03, 2026 | Madormo Richard | SVP, Worldwide Sales | Sell | $263.60K |
| May 22, 2026 | Coleman Troy | SVP, General Manager, Products | Sell | $205.74K |
| May 21, 2026 | Webster Roald Graham | VP, Chief Accounting Officer | Sell | $234.17K |
| May 18, 2026 | Kent Ian | SVP, Global Operations | Sell | $109.80K |
| May 14, 2026 | Lynch Susan D | - | Sell | $759.63K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 7 |
| 2026 Q1 | - | 3 |
| 2025 Q4 | - | 1 |
| 2025 Q3 | - | 3 |
| 2025 Q2 | - | 2 |
ALGM Ownership FAQ
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