$SI
Shoulder Innovations, Inc.
XNYS•Health Care•Surgical & Medical Instruments & Apparatus
Why is SI down today? It is at $22.06 (-0.18%), and our scanner flagged it 19 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment SI spikes, and full due diligence on SI — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $22.06
- Change today
- -0.18%
- Previous close
- $22.10
- 52-week range
- $10.92 – $24.59
- Market cap
- $459M
- Shares outstanding
- 20.8M SEC · as of 2026-07-30 · 24d
- Institutional own.
- 40.80%
- Total held
- 70.6%
- Tradeable float
- 6.1M 29% of shares · after 30% insiders + 41% institutions
- Short interest
- 216K ▲ +4% vs prior · as of 2026-07-31
- Short % of float
- 3.5%
- Days to cover
- 2.4d
- Avg daily volume
- 95K
- Sector
- Health Care
- Industry
- Surgical & Medical Instruments & Apparatus
- Exchange
- XNYS
- 5m
- 0.3x
- 15m
- 0.5x
- 1hthin
- 0.6x
- 1D
- --
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Why is $SI moving today?
Here is the latest on SI from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for SI today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Latest filing4Insider trade (Form 4)Aug 18, 2026 · 5 days agoFrom the trading subreddits (WallStreetBets, r/stocks and more). Retail chatter, not a signal. Do your own research.
Insiders
5 buys, 11 sells last 3 months (19/12 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Ahearn Matthew Fraser Officer | Sold (automatic/other) | -14K 0.07% of company | sold 5.5% | 244K | $297K at $20.94 | Aug 18, 26 |
Ahearn Matthew Fraser Officer | Sold (automatic/other) | -8K 0.04% of company | sold 3.1% | 258K | $167K at $20.10 | Aug 17, 26 |
Ahearn Matthew Fraser Officer | Sold (automatic/other) | -3K 0.01% of company | sold 0.9% | 267K | n/a | Aug 14, 26 |
Gilde Healthcare Holding B.V. Beneficial Owner (10%) | Sold (automatic/other) | -2K 0.01% of company | sold <0.1% | 2.21M | $47K at $22.60 | Aug 6, 26 |
Gilde Healthcare Holding B.V. Beneficial Owner (10%) | Sold (automatic/other) | -7K 0.04% of company | sold 0.3% | 2.21M | $166K at $22.64 | Aug 5, 26 |
Gilde Healthcare Holding B.V. Beneficial Owner (10%) | Sold (automatic/other) | -100K 0.5% of company | sold 4.3% | 2.22M | $2.3M at $22.77 | Aug 4, 26 |
Gilde Healthcare Holding B.V. Beneficial Owner (10%) | Sold (automatic/other) | -11K 0.05% of company | sold 0.5% | 2.32M | $244K at $22.71 | Aug 3, 26 |
Gilde Healthcare Holding B.V. Beneficial Owner (10%) | Sold (automatic/other) | -20K 0.10% of company | sold 0.9% | 2.33M | $455K at $22.73 | Jul 31, 26 |
Gilde Healthcare Holding B.V. Beneficial Owner (10%) | Sold (automatic/other) | -28K 0.1% of company | sold 1.2% | 2.35M | $660K at $23.36 | Jul 30, 26 |
Buchholz Richard Director | Acquired (grant/award) | +5K 0.02% of company | added 37% | 19K | n/a | Jun 26, 26 |
Buckman Paul Director | Acquired (grant/award) | +5K 0.02% of company | added 8.6% | 64K | n/a | Jun 26, 26 |
Hykes Andrew Director | Acquired (grant/award) | +5K 0.02% of company | added 100% | 7K | n/a | Jun 26, 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.
Dilution watch
Active shelfActive shelf on file — the company can issue new shares on demand (valid ~3 years). If $SI runs, these filings show who may be positioned to sell new or newly-registered shares into the move.
Sourced from SEC EDGAR filings (last 9 months); terms read straight from the filing text where available. Ongoing = an at-the-market (ATM) program still selling over time or a live shelf, so it can keep diluting; Completed = a one-time priced sale that already finished. A shelf (S-3) stays effective ~3 years. Form type signals dilution capacity, not an exact share count, and we can't confirm how much of a shelf or ATM remains unused. Not investment advice.
$SI Sentiment
NeutralBlend of news sentiment, today’s move, and community votes. Not investment advice.
$SI Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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SI stock FAQ
Why is $SI moving today?
Here is the latest on SI from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for SI 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 SI stock price today?
SI last traded at $22.06, down 0.18% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live SI alerts?
The SI 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 SI 19 times in the last 30 days.
What exchange is SI on?
SI (Shoulder Innovations, Inc.) trades on XNYS, with a market cap of about $459M in the SURGICAL & MEDICAL INSTRUMENTS & APPARATUS sector.
Is SI 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 SI for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.