PRTA
Prothena Corporation PLC · NASDAQ NMS - GLOBAL MARKET · Biotechnology
$10.36+$0.32 (+3.19%)
Prices delayed up to 5 minutes
AC Intelligence
AC Intelligence
AC Intelligence for PRTA is being prepared.
Key Stats
Key Stats
Open
$9.98
Day High
$10.37
Day Low
$9.80
Prev Close
$10.04
Volume
0
Avg Volume
539.1K
Day Change
+$0.32
Change %
+3.19%
Fundamentals
Fundamentals
P/B
1.83
EPS (TTM)
$-4.53
Market Cap
$540M
52-Wk Range
$4.32 — $11.84
Earnings History
Insider Activity
Who Owns This Stock
Who Owns PRTA
Other43.6%127 holders
Quality / Compounder19.6%12 holders
Passive / Index14.4%8 holders
Dealer / Bank7.9%14 holders
Activist3.1%1 holder
Tactical / Macro2.2%3 holders
Systematic / Quant2.2%8 holders
Based on Q4 2025 13F filings + AC behavioral model
181 institutional holders
Top Holders
-8.5%$39460.0B
$35118.5B
-24.3%$32654.2B
$21657.5B
+47.1%$17975.1B
+4.0%$17970.6B
$16057.1B
$14325.0B
-0.8%$13921.6B
-0.8%$13921.6B
+961.3%$13787.8B
$12610.9B
$9340.0B
+40.6%$8915.7B
+2.8%$8778.8B
$8213.2B
+229.9%$8024.2B
$7213.9B
$7109.5B
$6399.8B
Institutional Pressure
Market Regime:Strong Risk-Off (-0.62)SELLINGBUYING
▲
Mild Selling Pressure
Other(43.6%)
●
—Quality / Compounder(19.6%)
●
Holds throughPassive / Index(14.4%)
●
HoldsDealer / Bank(7.9%)
●
FacilitatingActivist(3.1%)
●
May accumulateTactical / Macro(2.2%)
●
Reducing rapidlySystematic / Quant(2.2%)
●
De-risking (mechanical)Income / Defensive(0.2%)
●
Inflows (flight to yield)Growth / Momentum(0.2%)
●
Likely trimming34% passive + quality floor won't sell.
Updated daily · Based on Q4 2025 filings + AC behavioral model
Sentiment Signals
Sentiment Signals
→Insider ActivityNo insider transactions in last 90 daysSEC Form 4
↑Analyst Consensus8 buy, 3 hold, 1 sellFinnhub
↑↑Inst. Flows180 increased/new, 76 decreased/exited (13F)AC 13F Analysis
Sources: SEC Form 4, Finnhub, AC 13F Analysis
On AcidCapitalist
On AcidCapitalist
No recent mentions of PRTA on AcidCapitalist.
Data provided by Finnhub. Prices delayed up to 5 minutes.