PRTA Stock Ownership Breakdown

A company's 13F filings with the Securities and Exchange Commission (SEC) provides investors with comprehensive information about institutional ownership in a listed company, a sign of strength in terms of how many institutions have confidence in that company. The number of institutional investors who currently own PRTA shares is 250, representing 97.51% of the company's common stock.

BLACKROCK INC., in the last quarter, reduced its stake in PRTA by -1.37% restricting it's holding to 3.72 million shares of worth nearly $92.11M. DIMENSIONAL FUND ADVISORS LP also lessened -0.55% of the PRTA shares from its portfolio, reducing its holding to 862.83 thousand shares of worth $21.37M. NORTHERN TRUST CORP also shunned PRTA shares holding by -1.69% last quarter which brought its holding to 397.26 thousand shares worth $9.84M.

As per its latest 13F filing, CREDIT SUISSE AG/ increased its stake in PRTA by 1.51% in the last quarter. The institutional holder raised its holding to 60.2 thousand shares having worth more than $1.49M. VANGUARD GROUP INC also added 5.11% more shares of PRTA to its portfolio, raising its holding to 1.13 million shares of worth $27.87M. ARTAL GROUP S.A. also increased its PRTA shares holding by 99.73% which brought its holding to 1 million shares worth $24.80M.

The insider with the most stakes in PRTA is Kinney Gene G. , President and CEO at the company. Additionally, PRTA stock is highly held by Chief Strategy Officer and CFO Nguyen Tran and director Selkoe Dennis J. among others.

Company executives, directors, and other insiders own 13.46% percent of Prothena Corporation plc's stock. Within the last six months, there have been 0 transaction(s) in which PRTA insiders have sold stock, totaling 0 shares. Insiders that have sold shares include WALKER KARIN L, SMITH BRANDON S., and KARP CAROL D..

There have been 0 transaction(s) during the past 6-months in which Prothena Corporation plc insiders have bought stock, totalling 0 shares

Around 0 Prothena Corporation plc shares are held by insiders, which represents about 13.46% of PRTA stock.

PRTA President and CEO, Kinney Gene G. holds the largest portfolio of the company's shares. PRTA shares owned by Kinney total nearly 12.79 thousand.

CREDIT SUISSE AG/ is the largest institutional owner in PRTA which holds 60.2 thousand shares worth $1.49M or 0.11% of the total PRTA shares outstanding followed by EDGEWOOD MANAGEMENT LLC with ownership of 24.06 thousand shares representing 0.05% of the PRTA ownership. METLIFE INVESTMENT MANAGEMENT, LLC is the third largest stakeholder with 21.85 thousand shares or 0.04% of the ownership worth more than $541.27K.

Stock options give the owner the ability but not the obligation to buy or sell a security at a predetermined price and date. Stock options can be classified into two types: puts and calls. A put is a bet on falling stock, and a call is a bet on rising stock. As far as the PRTA is concerned, it is a stock which is optionable.

Number of PRTA shares short is 8.77M. Shares short is a market sentiment in which investors have sold their shares short in a given stock but have not yet covered them or closed them out.

As of today, 53.81M shares of PRTA are outstanding.

Float represents the number of tradeable shares in a specific stock. By subtracting restricted and closely-held shares from a firm's total outstanding shares, we can calculate its floating stock. The term "closely-held shares" refers to shares held by employees, major shareholders, and company insiders. At present, PRTA has 38.37M shares in float.

Short ratio is calculated by dividing the number of short shares, short interest or bets that shareholders will sell short from the average daily volume. A higher ratio indicates longer times needed to repurchase borrowed shares (sold). The short ratio for PRTA is 11.71.