$PRTA
Prothena Corporation plc Ordinary Shares
XNAS•Health Care•Pharmaceutical Preparations
$8.61
▲+0.00%+$0.000
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Plans & pricingDonateProthena Corporation plc Ordinary Shares
XNAS•Health Care•Pharmaceutical Preparations
Why is PRTA up today? It is at $8.61 (+0.00%), and our scanner flagged it 46 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment PRTA spikes, and full due diligence on PRTA — key stats, earnings, dilution and insider activity. Free.
Our scanner flagged $PRTA 46 times in the last 30 days. Create a free account to track $PRTA, build a watchlist, and get instant unusual-volume alerts, with a full day of premium now and 5 more when you verify your email, no card needed.
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Here is the latest on PRTA from our scanner (live price and day move above). A recent catalyst in the news: “CRMD vs. PRTA: Which Stock Should Value Investors Buy Now?.” Early read: bearish.
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Scully William P Beneficial Owner (10%) | Bought (open market) | +100K 0.2% of company | added 25% | 501K | $857K at $8.57 | Oct 2, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +162K 0.3% of company | added 68% | 401K | $1.4M at $8.68 | Sep 29, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +104K 0.2% of company | added 76% | 239K | $890K at $8.60 | Sep 28, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +100K 0.2% of company | added 12% | 927K | $843K at $8.43 | Sep 18, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +27K 0.05% of company | added 3.4% | 827K | $256K at $9.47 | Sep 2, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +50K 0.10% of company | added 6.7% | 800K | $439K at $8.79 | Aug 20, 26 |
Scully William P Beneficial Owner (10%) | Sold (automatic/other) | -628K 1.2% of company | sold 46% | 750K | n/a | Aug 18, 26 |
Scully William P Beneficial Owner (10%) | Acquired (grant/award) | +336K 0.7% of company | added 32% | 1.38M | n/a | Aug 17, 26 |
Scully William P Beneficial Owner (10%) | Acquired (grant/award) | +252K 0.5% of company | added 32% | 1.04M | n/a | Aug 10, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +34K 0.07% of company | added 4.5% | 790K | $293K at $8.62 | Aug 7, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +4K | added 2.7% | 136K | $30K at $8.62 | Aug 7, 26 |
Isaacs Michael John Officer | Sold (automatic/other) | -8K 0.02% of company | sold 19% | 36K | $71K at $8.47 | Jul 29, 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.
Blend of news sentiment, today’s move, and community votes. Not investment advice.
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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Here is the latest on PRTA from our scanner (live price and day move above). A recent catalyst in the news: “CRMD vs. PRTA: Which Stock Should Value Investors Buy Now?.” Early read: bearish.
PRTA last traded at $8.61, up 0.00% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Prothena Corporation plc Ordinary Shares (PRTA) is next expected to report earnings on Thursday, November 5, 2026, about 27 days away. Earnings reports often cause large overnight gaps, so many traders manage risk around the date. The date can shift until the company officially confirms it.
The PRTA 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 PRTA 46 times in the last 30 days.
PRTA (Prothena Corporation plc Ordinary Shares) trades on XNAS, with a market cap of about $442M in the Pharmaceutical Preparations sector.
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 PRTA for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.
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