WILLIAM P SCULLY, a 10% owner of $PRTA, bought 100,000 shares of the company on 05-22-2026 for an estimated $981,300. This trade was reported by Quiver Quantitative using data from a recent SEC filing. This increased their holdings of this class of stock by approximately 13.6%. Following this trade, they now own 836,000 shares of this class of $PRTA stock.
$PRTA Insider Trading Activity
$PRTA insiders have traded $PRTA stock on the open market 1 times in the past 6 months. Of those trades, 1 have been purchases and 0 have been sales.
Here’s a breakdown of recent trading of $PRTA stock by insiders over the last 6 months:
- WILLIAM P SCULLY purchased 100,000 shares for an estimated $981,300
To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.
$PRTA Hedge Fund Activity
We have seen 93 institutional investors add shares of $PRTA stock to their portfolio, and 91 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- RUBRIC CAPITAL MANAGEMENT LP added 1,322,669 shares (+36.0%) to their portfolio in Q1 2026, for an estimated $12,856,342
- ARMISTICE CAPITAL, LLC removed 1,060,589 shares (-70.7%) from their portfolio in Q1 2026, for an estimated $10,308,925
- JPMORGAN CHASE & CO removed 565,810 shares (-76.9%) from their portfolio in Q4 2025, for an estimated $5,403,485
- BLACKROCK, INC. added 536,701 shares (+13.1%) to their portfolio in Q1 2026, for an estimated $5,216,733
- TWO SIGMA INVESTMENTS, LP added 535,840 shares (+80.0%) to their portfolio in Q1 2026, for an estimated $5,208,364
- CITADEL ADVISORS LLC removed 476,808 shares (-52.3%) from their portfolio in Q1 2026, for an estimated $4,634,573
- POINT72 ASSET MANAGEMENT, L.P. removed 460,188 shares (-53.5%) from their portfolio in Q1 2026, for an estimated $4,473,027
To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.
$PRTA Analyst Ratings
Wall Street analysts have issued reports on $PRTA in the last several months. We have seen 1 firms issue buy ratings on the stock, and 0 firms issue sell ratings.
Here are some recent analyst ratings:
- Citizens issued a "Market Outperform" rating on 12/01/2025
To track analyst ratings and price targets for $PRTA, check out Quiver Quantitative's $PRTA forecast page.
$PRTA Price Targets
Multiple analysts have issued price targets for $PRTA recently. We have seen 3 analysts offer price targets for $PRTA in the last 6 months, with a median target of $19.0.
Here are some recent targets:
- Jason N. Butler from Citizens set a target price of $20.0 on 05/08/2026
- Brian Abrahams from RBC Capital set a target price of $12.0 on 02/20/2026
This article is not financial advice. See Quiver Quantitative's disclaimers for more information.
