Investors on the quest for market-beating returns often employ the strategy of stock picking. Making informed choices in stocks can greatly amplify your wealth.
The closing price of Prothena Corporation plc (NASDAQ: PRTA) was $9.87 for the day, down -4.36% from the previous closing price of $10.32. In other words, the price has decreased by -$4.36 from its previous closing price. On the day, 0.96 million shares were traded. PRTA stock price reached its highest trading level at $10.32 during the session, while it also had its lowest trading level at $9.69.
Ratios:
Our analysis of PRTA’s different ratios will help us gain a deeper understanding of the company. For the most recent quarter (mrq), Quick Ratio is recorded 6.61 and its Current Ratio is at 6.61. In the meantime, Its Debt-to-Equity ratio is 0.03 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:
Also, insider trades can serve as a great indicator of what management thinks about the future direction of a stock’s price. 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 531301920 and an Enterprise Value of 209540928. The expected Price-to-Earnings-to-Growth (PEG) calculation for the next 5 years is 14.08. For the stock, the TTM Price-to-Sale (P/S) ratio is 45.06 while its Price-to-Book (P/B) ratio in mrq is 1.80. Its current Enterprise Value per Revenue stands at 17.779 whereas that against EBITDA is -0.947.
Stock Price History:
The Beta on a monthly basis for PRTA is -0.10, which has changed by -0.2527154 over the last 52 weeks, in comparison to a change of 0.13042927 over the same period for the S&P500. Over the past 52 weeks, PRTA has reached a high of $17.66, while it has fallen to a 52-week low of $4.32. The 50-Day Moving Average of the stock is -4.43%, while the 200-Day Moving Average is calculated to be 9.24%.
Shares Statistics:
PRTA traded an average of 641.84K shares per day over the past three months and 598680 shares per day over the past ten days. A total of 53.83M shares are outstanding, with a floating share count of 43.39M. Insiders hold about 19.39% of the company’s shares, while institutions hold 79.70% stake in the company. Shares short for PRTA as of 1764288000 were 4639338 with a Short Ratio of 7.23, compared to 1761868800 on 4144115. Therefore, it implies a Short% of Shares Outstanding of 4639338 and a Short% of Float of 10.280000000000001.
Earnings Estimates
. The current rating of Prothena Corporation plc (PRTA) reflects the combined expertise of 3.0 analysts actively engaged in assessing its market performance.The consensus estimate for the next quarter is -$0.32, with high estimates of -$0.23 and low estimates of -$0.41.
Analysts are recommending an EPS of between -$4.52 and -$4.54 for the fiscal current year, implying an average EPS of -$4.53. EPS for the following year is $0.53, with 3.0 analysts recommending between $1.8 and -$0.34.
Revenue Estimates
A total of 5 analysts have provided revenue estimates for PRTA’s current fiscal year. The highest revenue estimate was $12.7M, while the lowest revenue estimate was $9.61M, resulting in an average revenue estimate of $10.28M. In the same quarter a year ago, actual revenue was $135.16M





