$MMSI
Merit Medical Systems Inc
XNAS•Health Care•Surgical & Medical Instruments & Apparatus
Why is MMSI up today? It is at $90.68 (+0.00%), and our scanner flagged it 18 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment MMSI spikes, and full due diligence on MMSI — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $90.68
- Change today
- +0.00%
- Previous close
- $90.68
- 52-week range
- $59.74 – $94.75
- Market cap
- $5.41B
- Institutional own.
- 99.9%
- Total held
- 99.9%
- Tradeable float
- 56K 0% of shares · after <1% insiders + 100% institutions
- Short interest
- 3.5M ▼ -8% vs prior · as of 2026-08-14
- Days to cover
- 2.8d
- Avg daily volume
- 764K
- Sector
- Health Care
- Industry
- Surgical & Medical Instruments & Apparatus
- Exchange
- XNAS
- 5m
- 0.4x
- 15m
- 1.5x
- 1h
- 1.2x
- 1D
- --
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Why is $MMSI moving today?
Here is the latest on MMSI from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for MMSI today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Latest filing3Initial insider ownership (Form 3)Sep 1, 2026 · todayAnalyst data via Nasdaq. Not investment advice.
Insiders
Insiders selling0 buys, 5 sells last 3 months (21/16 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Voigt Michel J. Officer | Sold (automatic/other) | -650 | sold 1.4% | 45K | n/a | Aug 24, 26 |
Peterson Neil W. Officer | Sold (automatic/other) | -8K 0.01% of company | sold 29% | 18K | $678K at $90.45 | Aug 24, 26 |
Peterson Neil W. Officer | Sold (automatic/other) | -21K 0.04% of company | sold 46% | 26K | $1.8M at $85.00 | Aug 4, 26 |
Voigt Michel J. Officer | Sold (automatic/other) | -65 | sold 0.1% | 46K | n/a | Jun 15, 26 |
Lloyd Brian G. Officer | Sold (automatic/other) | -2K | sold 3.2% | 60K | n/a | Jun 5, 26 |
Gunderson Thomas J. Director | Other | 21K 0.04% of company | added 54% | 61K | $1.1M at $52.17 | May 20, 26 |
Millner F. Ann Ed.D. Director | Acquired (grant/award) | +3K | added 10% | 38K | n/a | May 18, 26 |
Mcdonnell Michael R. Director | Acquired (grant/award) | +3K | added 54% | 10K | n/a | May 18, 26 |
Carpenter Lonny J. Director | Acquired (grant/award) | +3K | added 20% | 21K | n/a | May 18, 26 |
Perez Silvia M. Director | Acquired (grant/award) | +3K | added 75% | 8K | n/a | May 18, 26 |
Kaiser Laura S. Director | Acquired (grant/award) | +3K | added 35% | 13K | n/a | May 18, 26 |
Evans Stephen C. Director | Acquired (grant/award) | +3K | added 51% | 10K | n/a | May 18, 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.
$MMSI Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$MMSI Activity
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MMSI stock FAQ
Why is $MMSI moving today?
Here is the latest on MMSI from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for MMSI 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 MMSI stock price today?
MMSI last traded at $90.68, up 0.00% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live MMSI alerts?
The MMSI 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 MMSI 18 times in the last 30 days.
What exchange is MMSI on?
MMSI (Merit Medical Systems Inc) trades on XNAS, with a market cap of about $5.41B in the SURGICAL & MEDICAL INSTRUMENTS & APPARATUS sector.
Is MMSI 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 MMSI for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.