The company
Prothena Corporation plc -
PRTA · Nasdaq
PRTA stood above a rising 150-day average in 18 of the last 52 weekly readings, and has been out of that trend for the last 21 weeks. It is 8.4% below that average now. Biotechnology: 18% of its 561 stocks in an uptrend (−14 points in four weeks); Health Care: 28% (−9 points in four weeks).
Statistics
- Rotation
- Not moving yet
- Weeks in an uptrend
- out for 21
- Industry in uptrend
- 18% -14 in 4 wk
- Insider buys, 12 months
- $18.1M
- Insider sales, 12 months
- $272K
- Officials’ trades on record
- 6
- Institutions holding
- 182 (+6)
In the rotation
Each square a week: lit when it closed above a rising 150-day average. 18 of 52 weeks.
Biotechnology: Few of its stocks are in an uptrend and the share has fallen sharply over four weeks. Health Care: A minority of its stocks are in an uptrend and the share has fallen sharply over four weeks.
Money in and out
Open-market buys above the line and sales below, in dollars.
Congress and officials
6 disclosed lines: House 6, Senate 0, executive 0; 1 people.
| Who | Did | Amount | Traded |
|---|---|---|---|
| James B. Renacci House: U.S. House ClerkOH16 | sold | $1k–$15k | 15 Dec 2017filed 21 Dec 2017 |
| James B. Renacci House: U.S. House ClerkOH16 | bought | $1k–$15k | 13 Jan 2017filed 24 Jan 2017 |
| James B. Renacci House: U.S. House ClerkOH16 | sold | $1k–$15k | 13 Dec 2016filed 20 Dec 2016 |
| James B. Renacci House: U.S. House ClerkOH16 | bought | $1k–$15k | 17 Nov 2016filed 6 Dec 2016 |
| James B. Renacci House: U.S. House ClerkOH16 | bought | $1k–$15k | 1 Jul 2015filed 22 Jul 2015 |
| James B. Renacci House: U.S. House ClerkOH16 | bought | $1k–$15k | 1 Jul 2015filed 22 Jul 2015 |
Insiders
| Who | Did | Shares | Traded |
|---|---|---|---|
| William P. Scully10% owner | bought | 10,000at $8.46 | 14 Oct 2026filed 15 Oct 2026 |
| William P. Scully10% owner | bought | 100,000at $8.35 | 13 Oct 2026filed 15 Oct 2026 |
| William P. Scully10% owner | bought | 90,000at $8.57 | 8 Oct 2026filed 9 Oct 2026 |
| William P. Scully10% owner | bought | 125,000at $8.40 | 7 Oct 2026filed 9 Oct 2026 |
| William P. Scully10% owner | bought | 100,000at $8.57 | 2 Oct 2026filed 6 Oct 2026 |
| William P. Scully10% owner | bought | 162,000at $8.68 | 29 Sep 2026filed 30 Sep 2026 |
| William P. Scully10% owner | bought | 103,500at $8.60 | 28 Sep 2026filed 29 Sep 2026 |
| William P. Scully10% owner | bought | 100,000at $8.43 | 18 Sep 2026filed 21 Sep 2026 |
| William P. Scully10% owner | bought | 27,000at $9.47 | 2 Sep 2026filed 3 Sep 2026 |
| William P. Scully10% owner | bought | 50,000at $8.79 | 20 Aug 2026filed 21 Aug 2026 |
| William P. Scully10% owner | bought | 34,000at $8.62 | 7 Aug 2026filed 10 Aug 2026 |
| William P. Scully10% owner | bought | 3,500at $8.62 | 7 Aug 2026filed 10 Aug 2026 |
Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.
Institutions
Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.
| Manager | Shares | Change |
|---|---|---|
| FMR LLCreduced · filed 13 Aug 2026 | 7,199,218$70.5M | -352,000−4.7% |
| Rubric Capital Management LPunchanged · filed 14 Aug 2026 | 5,000,000$49.0M | 00.0% |
| BlackRock, Inc.added · filed 7 Aug 2026 | 4,867,955$47.7M | +223,795+4.8% |
| STATE STREET CORPadded · filed 7 Aug 2026 | 2,393,424$23.4M | +454,926+23.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLCadded · filed 13 Aug 2026 | 1,651,293$16.2M | +205,314+14.2% |
| D. E. Shaw & Co., Inc.reduced · filed 14 Aug 2026 | 1,611,457$15.8M | -151,890−8.6% |
| ADAR1 Capital Management, LLCreduced · filed 14 Aug 2026 | 1,554,535$15.2M | -26,908−1.7% |
| TWO SIGMA INVESTMENTS, LPadded · filed 14 Aug 2026 | 1,264,987$12.4M | +59,009+4.9% |
| Palo Alto Investors LPreduced · filed 17 Aug 2026 | 1,143,155$11.2M | -65,413−5.4% |
| GEODE CAPITAL MANAGEMENT, LLCadded · filed 12 Aug 2026 | 1,125,877$11.0M | +27,711+2.5% |
News
No headline names it lately.
Everyone who traded it
Same industry
Government contracts
No federal award is tied to it.
From its SEC filings
Analyst forecasts
No analyst forecasts yet.