ONCE - Spark Therapeutics, Inc.

NasdaqGS - NasdaqGS Real Time Price. Currency in USD

Major Holders

Currency in USD
Breakdown
7.45%% of Shares Held by All Insider
92.25%% of Shares Held by Institutions
99.67%% of Float Held by Institutions
241Number of Institutions Holding Shares

Top Institutional Holders

HolderSharesDate Reported% OutValue
Vanguard Group, Inc. (The)3,177,757Jun 29, 20198.26%325,338,761
Blackrock Inc.2,756,280Jun 29, 20197.16%282,187,946
State Street Corporation1,304,325Jun 29, 20193.39%133,536,793
Magnetar Financial LLC885,199Jun 29, 20192.30%90,626,673
Casdin Capital, LLC884,800Jun 29, 20192.30%90,585,824
Alpine Associates Management Inc.784,100Jun 29, 20192.04%80,276,158
Pentwater Capital Management Lp780,000Jun 29, 20192.03%79,856,400
Paulson & Company, Inc.757,807Jun 29, 20191.97%77,584,280
Baker Brothers Advisors, LLC751,927Jun 29, 20191.95%76,982,286
CNH Partners LLC726,169Jun 29, 20191.89%74,345,182

Top Mutual Fund Holders

HolderSharesDate Reported% OutValue
Federated Kaufmann Fund1,069,500Mar 30, 20192.78%121,794,660
Vanguard Total Stock Market Index Fund869,654Mar 30, 20192.26%99,036,197
Vanguard Small-Cap Index Fund832,763Mar 30, 20192.16%94,835,050
iShares Russell 2000 ETF746,364Jul 30, 20191.94%74,651,327
SPDR (R) Ser Tr-SPDR (R) S&P (R) Biotech ETF579,603Jul 30, 20191.51%57,971,892
Vanguard Small-Cap Growth Index Fund472,391Mar 30, 20191.23%53,795,887
Vanguard Extended Market Index Fund458,650Mar 30, 20191.19%52,231,062
IndexIQ Tr-IQ ARB Merger Arbitrage ETF450,584Jul 30, 20191.17%45,067,411
iShares NASDAQ Biotechnology ETF381,446Jul 30, 20190.99%38,152,228
Arbitrage Fund371,720Feb 27, 20190.97%42,115,876