$ALGM
Allegro MicroSystems, Inc. Common Stock
XNAS•Technology•Semiconductors & Related Devices
Why is ALGM up today? It is at $37.56 (+0.99%), and our scanner flagged it 126 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
- $37.56
- Change today
- +0.99%
- Previous close
- $37.19
- 52-week range
- $22.41 – $71.77
- Market cap
- $6.93B
- Institutional own.
- 87.43%
- Total held
- 87.9%
- Tradeable float
- 22.5M 12% of shares · after <1% insiders + 87% institutions
- Short interest
- 11.1M ▼ -12% vs prior · as of 2026-07-31
- Short % of float
- 49.1%
- Days to cover
- 4.4d
- Avg daily volume
- 2.3M
- Sector
- Technology
- Industry
- Semiconductors & Related Devices
- Exchange
- XNAS
- 5mthin
- 200x
- 15mthin
- 200x
- 1hthin
- 4.5x
- 1D
- 0.0x
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Why is $ALGM up today?
Here is the latest on ALGM from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for ALGM today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Likely catalystShareholder Vote, from an SEC filing. Read it →Latest filing4Insider trade (Form 4)Aug 18, 2026 · 2 days agoAnalyst data via Nasdaq. Not investment advice.
Insiders
Insiders buying5 buys, 3 sells last 3 months (16/28 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Raubacher Jennie Director | Sold (automatic/other) | -1K | sold 6.7% | 14K | $45K at $45.32 | Aug 17, 26 |
Hagen Erin Officer | Sold (automatic/other) | -2K | sold 6.9% | 31K | $101K at $44.39 | Aug 10, 26 |
Palepu Krishna G. Director | Acquired (grant/award) | +4K | added 43% | 14K | n/a | Aug 5, 26 |
Puma Mary G Director | Acquired (grant/award) | +4K | added 24% | 22K | n/a | Aug 5, 26 |
Martin Joseph R Director | Acquired (grant/award) | +4K | added 12% | 39K | n/a | Aug 5, 26 |
Suzuki Yoshihiro Director | Acquired (grant/award) | +4K | added 2.0% | 218K | n/a | Aug 5, 26 |
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 |
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?
Here is the latest on ALGM from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for ALGM today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
What is the ALGM stock price today?
ALGM last traded at $37.56, up 0.99% 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 126 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 $6.93B 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.