$PRTA
Prothena Corporation plc Ordinary Shares
XNAS•Health Care•Pharmaceutical Preparations
$8.33
▲+1.58%+$0.130Market open
Prothena Corporation plc Ordinary Shares
XNAS•Health Care•Pharmaceutical Preparations
Why is PRTA up today? It is at $8.33 (+1.51%), and our scanner flagged it 79 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 79 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.
No card · 5 premium days · join 800+ traders
The top plays and unusual-volume catches our scanner flags, emailed to you. No account needed.
No spam. Unsubscribe anytime. Not investment advice.
Here is the latest on PRTA from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for PRTA today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Likely catalystClinical / FDA update, from the latest SEC filing. Read it →Sources: float & market cap via Polygon · short interest via FINRA · borrow & shortability via Alpaca · SSR from Reg SHO 201 · filings & dilution via SEC EDGAR · analysts via Nasdaq.
Auto-generated from public data for research and education. Not investment advice.
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Scully William P Beneficial Owner (10%) | Acquired (grant/award) | +566K 1.1% of company | added 48% | 1.75M | n/a | Oct 27, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +50K 0.10% of company | added 4.4% | 1.19M | $404K at $8.07 | Oct 23, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +100K 0.2% of company | added 9.6% | 1.14M | $819K at $8.19 | Oct 22, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +10K 0.02% of company | added 1.0% | 1.04M | $85K at $8.46 | Oct 14, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +100K 0.2% of company | added 11% | 1.03M | $835K at $8.35 | Oct 13, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +90K 0.2% of company | added 14% | 716K | $771K at $8.57 | Oct 8, 26 |
Scully William P Beneficial Owner (10%) | Bought (open market) | +125K 0.2% of company | added 40% | 439K | $1.1M at $8.40 | Oct 7, 26 |
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 |
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.
The tickers our scanner is lighting up most over the last 48 hours.
Comparable names in pharmaceutical preparations, closest in size first.
Here is the latest on PRTA from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for PRTA today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
PRTA last traded at $8.33, up 1.51% 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 (after close), which is tomorrow. 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 79 times in the last 30 days.
PRTA (Prothena Corporation plc Ordinary Shares) trades on XNAS, with a market cap of about $421M 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.
$PRTA discussion
Sign in to ask a question or join the discussion.