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After finishing at $6.43 in the prior trading day, Prothena Corporation plc (NASDAQ: PRTA) closed at $6.22, down -3.27%. In other words, the price has decreased by -$3.27 from its previous closing price. On the day, 0.73 million shares were traded. PRTA stock price reached its highest trading level at $6.46 during the session, while it also had its lowest trading level at $6.18.
Ratios:
Our goal is to gain a better understanding of PRTA by taking a closer look at its different ratios. For the most recent quarter (mrq), Quick Ratio is recorded 9.00 and its Current Ratio is at 9.00. In the meantime, Its Debt-to-Equity ratio is 0.02 whereas as Long-Term Debt/Eq ratio is at 0.02.
Jefferies Downgraded its Buy to Hold on May 27, 2025, while the target price for the stock was maintained at $6.
Insider Transactions:
The insider trade also gives investors a glimpse into the future direction of stock prices, which can be beneficial to investors. A recent insider transaction in this stock occurred on May 02 ’25 when EcoR1 Capital, LLC sold 3,317,938 shares for $8.36 per share. The transaction valued at 27,744,929 led to the insider holds 8,266,342 shares of the business.
EcoR1 Capital, LLC sold 1,984,053 shares of PRTA for $15,164,712 on May 06 ’25. The 10% Owner now owns 5,304,596 shares after completing the transaction at $7.64 per share. On May 05 ’25, another insider, EcoR1 Capital, LLC, who serves as the 10% Owner of the company, sold 977,693 shares for $8.11 each. As a result, the insider received 7,930,166 and left with 7,288,649 shares of the company.
Valuation Measures:
Investors should consider key stock statistics when deciding whether to invest or divest. In the wake of the recent closing price, PRTA now has a Market Capitalization of 334803936 and an Enterprise Value of -81002216. For the stock, the TTM Price-to-Sale (P/S) ratio is 2.43 while its Price-to-Book (P/B) ratio in mrq is 0.76. Its current Enterprise Value per Revenue stands at -0.587 whereas that against EBITDA is 0.588.
Stock Price History:
The Beta on a monthly basis for PRTA is -0.04, which has changed by -0.7335267 over the last 52 weeks, in comparison to a change of 0.10611236 over the same period for the S&P500. Over the past 52 weeks, PRTA has reached a high of $25.42, while it has fallen to a 52-week low of $4.32. The 50-Day Moving Average of the stock is 0.73%, while the 200-Day Moving Average is calculated to be -49.53%.
Shares Statistics:
The stock has traded on average 1.79M shares per day over the past 3-months and 918320 shares per day over the last 10 days, according to various share statistics. A total of 53.83M shares are outstanding, with a floating share count of 42.32M. Insiders hold about 21.38% of the company’s shares, while institutions hold 70.17% stake in the company. Shares short for PRTA as of 1749772800 were 4655763 with a Short Ratio of 2.42, compared to 1747267200 on 8952748. Therefore, it implies a Short% of Shares Outstanding of 4655763 and a Short% of Float of 16.27.
Dividends & Splits
Against a Trailing Annual Dividend Yield of 0.0
