In the Green: Prothena Corporation plc (PRTA) Closes at $9.21, Up/Down -1.81% from Previous Day

Ulysses Smith

Investors with the goal of beating the broader market often turn to stock selection. Strategic choices in individual stocks can have a profound impact on your wealth.

In the latest session, Prothena Corporation plc (NASDAQ: PRTA) closed at $9.21 down -1.81% from its previous closing price of $9.38. In other words, the price has decreased by -$1.81 from its previous closing price. On the day, 4.04 million shares were traded. PRTA stock price reached its highest trading level at $9.56 during the session, while it also had its lowest trading level at $9.17.

Ratios:

For a deeper understanding of Prothena Corporation plc’s stock, let’s take a closer look at its various ratios. 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.

Insider Transactions:

Additionally, insider trades can be beneficial to investors who want to learn what the management thinks about stock prices in the future. 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 495774144 and an Enterprise Value of 174013136. The expected Price-to-Earnings-to-Growth (PEG) calculation for the next 5 years is 13.14. For the stock, the TTM Price-to-Sale (P/S) ratio is 42.05 while its Price-to-Book (P/B) ratio in mrq is 1.68. Its current Enterprise Value per Revenue stands at 14.764 whereas that against EBITDA is -0.786.

Stock Price History:

The Beta on a monthly basis for PRTA is -0.08, which has changed by -0.39921725 over the last 52 weeks, in comparison to a change of 0.14402747 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 -10.46%, while the 200-Day Moving Average is calculated to be 4.04%.

Shares Statistics:

For the past three months, PRTA has traded an average of 655.20K shares per day and 990340 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 79.67% stake in the company. Shares short for PRTA as of 1764288000 were 4639338 with a Short Ratio of 7.08, 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

Prothena Corporation plc (PRTA) is presently subject to a detailed evaluation by 3.0 analysts, each offering their unique perspectives on its market standing.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

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