Prothena Corporation plc (PRTA)’s Day in Review: Closing at 4.59, Down by -2.34

Those aiming for above-average market returns often engage in the meticulous process of stock picking. Choosing the right stocks can make a substantial difference in your wealth.

After finishing at $4.70 in the prior trading day, Prothena Corporation plc (NASDAQ: PRTA) closed at $4.59, down -2.34%. In other words, the price has decreased by -$2.34 from its previous closing price. On the day, 1.96 million shares were traded.

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:

For the stock, the TTM Price-to-Sale (P/S) ratio is 1.79 while its Price-to-Book (P/B) ratio in mrq is 0.56.

Stock Price History:

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 -50.02%, while the 200-Day Moving Average is calculated to be -68.65%.

Shares 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 74.04% stake in the company.

Earnings Estimates

The current rating of Prothena Corporation plc (PRTA) reflects the combined expertise of 9.0 analysts actively engaged in assessing its market performance.The consensus estimate for the next quarter is -$0.81, with high estimates of -$0.25 and low estimates of -$1.13.

Analysts are recommending an EPS of between -$2.78 and -$4.61 for the fiscal current year, implying an average EPS of -$3.68. EPS for the following year is -$3.07, with 9.0 analysts recommending between -$1.64 and -$4.63.

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