Type / Class
Equity / Common Stock, par value $0.001 per share
Shares outstanding
55,705,828
Total 13F shares
9,265,285
Share change
+164,847
Total reported value
$118,611,567
Price per share
$12.81
Number of holders
53
Value change
+$3,650,412
Number of buys
24
Number of sells
22

Institutional Holders of Spero Therapeutics, Inc. - Common Stock, par value $0.001 per share (SPRO) as of Q1 2019

As of 31 Mar 2019, Spero Therapeutics, Inc. - Common Stock, par value $0.001 per share (SPRO) was held by 53 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 9,265,285 shares. The largest 10 holders included Atlas Venture Associates IX, LLC, Alphabet Inc., Aquilo Capital Management, LLC, Artal Group S.A., AWM Investment Company, Inc., Rock Springs Capital Management LP, ORBIMED ADVISORS LLC, VHCP Management II, LLC, BVF INC/IL, and BlackRock Inc.. This page lists 53 institutional shareholders reporting positions in this security for the Q1 2019 filing period.
Investor Option Weight % Change % Value $ * Price Shares Share Change Activity Report Period
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.