Cardiovascular Systems, Inc. (NASDAQ:CSII – Get Rating) saw a significant growth in short interest in the month of July. As of July 31st, there was short interest totalling 1,450,000 shares, a growth of 17.9% from the July 15th total of 1,230,000 shares. Based on an average trading volume of 345,500 shares, the short-interest ratio is presently 4.2 days. Approximately 4.3% of the shares of the company are short sold.

Insider Buying and Selling at Cardiovascular Systems

In other news, CFO Jeffrey S. Points purchased 3,000 shares of the firm's stock in a transaction on Friday, May 20th. The stock was bought at an average cost of $14.50 per share, for a total transaction of $43,500.00. Following the completion of the acquisition, the chief financial officer now directly owns 109,312 shares of the company's stock, valued at $1,585,024. The transaction was disclosed in a filing with the SEC, which is available through the SEC website. Corporate insiders own 3.00% of the company's stock.

Institutional Investors Weigh In On Cardiovascular Systems

Several hedge funds have recently made changes to their positions in the stock. Signaturefd LLC lifted its stake in Cardiovascular Systems by 8,110.3% during the first quarter. Signaturefd LLC now owns 2,381 shares of the medical device company's stock worth $54,000 after purchasing an additional 2,352 shares during the period. Acadian Asset Management LLC lifted its stake in Cardiovascular Systems by 294.7% during the fourth quarter. Acadian Asset Management LLC now owns 2,684 shares of the medical device company's stock worth $50,000 after purchasing an additional 2,004 shares during the period. PNC Financial Services Group Inc. lifted its stake in Cardiovascular Systems by 32.1% during the first quarter. PNC Financial Services Group Inc. now owns 3,025 shares of the medical device company's stock worth $68,000 after purchasing an additional 735 shares during the period. Nisa Investment Advisors LLC lifted its stake in Cardiovascular Systems by 54.3% during the first quarter. Nisa Investment Advisors LLC now owns 3,495 shares of the medical device company's stock worth $79,000 after purchasing an additional 1,230 shares during the period. Finally, Point72 Hong Kong Ltd bought a new position in Cardiovascular Systems during the fourth quarter worth about $74,000. Institutional investors own 91.24% of the company's stock.

Cardiovascular Systems Stock Up 2.1 %

About Cardiovascular Systems

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Cardiovascular Systems, Inc, a medical device company, develops and commercializes solutions to treat peripheral and coronary artery diseases in the United States and internationally. The company offers peripheral artery disease products, which are catheter-based platforms to treat various plaque types in above and below the knee, including calcified plaque, as well as address various limitations related with surgical, catheter, and pharmacological treatment alternatives; and peripheral support products.

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