$ALGM
Allegro MicroSystems, Inc. Common Stock
XNAS•Technology•Semiconductors & Related Devices
Why is ALGM up today? It is at $43.10 (+3.11%), and our scanner flagged it 93 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment ALGM spikes, and full due diligence on ALGM — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $43.10
- Change today
- +3.11%
- Previous close
- $41.80
- 52-week range
- $22.41 – $71.77
- Market cap
- $7.79B
- Institutional own.
- 83.60%
- Total held
- 84.1%
- Tradeable float
- 29.7M 16% of shares · after <1% insiders + 84% institutions
- Short interest
- 12.6M ▼ -19% vs prior · as of 2026-07-15
- Short % of float
- 42.3%
- Days to cover
- 3.9d
- Avg daily volume
- 2.3M
- Sector
- Technology
- Industry
- Semiconductors & Related Devices
- Exchange
- XNAS
- 5m
- 0.3x
- 15m
- 0.2x
- 1h
- 0.2x
- 1D
- 0.0x
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Why is $ALGM up today?
ALGM is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 1 unusual-volume and momentum alert on ALGM today, peaking at 2.7x its normal volume.
Likely catalystQuarterly report (10-Q), from the latest SEC filing. Read it →Analyst data via Nasdaq. Not investment advice.
Insiders
10 buys, 15 sells last 3 months (19/27 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
White Brian C Director | Acquired (grant/award) | +594 | n/a | 594 | n/a | Jun 17, 26 |
Madormo Richard Officer | Sold (automatic/other) | -5K | sold 6.7% | 70K | $264K at $52.72 | Jun 3, 26 |
Coleman Troy Officer | Sold (automatic/other) | -5K | sold 5.5% | 77K | $206K at $45.72 | May 22, 26 |
Webster Roald Graham Officer | Sold (automatic/other) | -5K | sold 28% | 13K | $234K at $44.88 | May 21, 26 |
Kent Ian Officer | Sold (automatic/other) | -3K | sold 9.4% | 25K | $110K at $41.56 | May 18, 26 |
Coleman Troy Officer | Sold (automatic/other) | -10K | sold 11% | 82K | $417K at $43.10 | May 16, 26 |
Briansky Sharon Officer | Sold (automatic/other) | -14K | sold 15% | 80K | $601K at $43.10 | May 16, 26 |
Doogue Michael Officer | Sold (automatic/other) | -61K 0.03% of company | sold 18% | 279K | $2.6M at $43.10 | May 16, 26 |
Madormo Richard Officer | Sold (automatic/other) | -5K | sold 6.8% | 75K | $234K at $43.10 | May 16, 26 |
D'Antilio Derek Officer | Sold (automatic/other) | -38K 0.02% of company | sold 14% | 239K | $1.6M at $43.10 | May 16, 26 |
Webster Roald Graham Officer | Sold (automatic/other) | -4K | sold 19% | 18K | $184K at $43.10 | May 16, 26 |
Kent Ian Officer | Sold (automatic/other) | -2K | sold 7.7% | 28K | $101K at $43.10 | May 16, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
$ALGM Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$ALGM Activity
News, unusual-volume alerts, AI-trader trades and community chatter — the whole story, newest first.
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ALGM stock FAQ
Why is $ALGM up today?
ALGM is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 1 unusual-volume and momentum alert on ALGM today, peaking at 2.7x its normal volume.
What is the ALGM stock price today?
ALGM last traded at $43.10, up 3.11% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live ALGM alerts?
The ALGM Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged ALGM 93 times in the last 30 days.
What exchange is ALGM on?
ALGM (Allegro MicroSystems, Inc. Common Stock) trades on XNAS, with a market cap of about $7.79B in the SEMICONDUCTORS & RELATED DEVICES sector.
Is ALGM good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge ALGM for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.