Short Interest

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The mission of ShortSqueeze.com TM is to provide short interest stock market data and services, so our members will be better informed of short selling in the market, track shorts in stocks and gain from the advantages that can be achieved from this valuable market data.

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Short Quote™

Symbol:

Prothena Corporation Plc Ord WI $ 9.20
PRTA (NASDAQ) 0.00
Short Squeeze Ranking™ view
Daily Short Sale Volume view
Short Interest (Shares Short) 8,380,000
Short Interest Ratio (Days To Cover) 18.7
Short Percent of Float 19.72 %
Short % Increase / Decrease -5 %
Short Interest (Shares Short) - Prior 8,780,000
Shares Float 42,500,000
Trading Volume - Today 341,020
Trading Volume - Average 448,200
Trading Volume - Today vs. Average 76.09%
% Owned by Insiders 12.42%
% Owned by Institutions
Earnings Per Share
PE Ratio
Market Cap. $ 0
% From 52-Wk High -63.81%
% From 52-Wk Low 1.10%
% From 200-Day MA -46.39%
% From 50-Day MA -30.02%
Sector Healthcare
Industry Biotechnology
Exchange NAS
Record Date 2025-AprA

In The News

“The possibility of a short squeeze is one reason some analysts look at a high amount of short interest as a bullish indicator. Short Interest is the fuel, performance is the fuse, says ShortSqueeze.com”
- USA Today

...short sellers, not financial results, are driving up Air T's share price. More than half the shares were sold short last month, according to ShortSqueeze.com”
- Reuters

“...according to ShortSqueeze.com. Any encouraging news from Martha Stewart Living could lead to a wave of short sellers trying to buy stock and limit their losses, pushing the price higher. ”
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