Rock Springs Capital Management LP

Q1 2015 13F Holdings Report, Stock Holdings

Signature - Title
Nnamdi Etoh - Chief Financial Officer
Location
Baltimore, Maryland
Holdings as of
March 31, 2015
Value $
$1.07B
Num holdings
105
Date filed
5/15/2015, 01:05 PM
Description
All US holdings of this investor are reported in this report.
Previous filing
Q4 2014 - Feb 17, 2015
Sym Weight Trade Impact Company Class Shares Change Activity Value Change $ Value $ * Price $ Shares Principal
Filing 2015 Q1 compared to 2014 Q4 by default.
* 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.

Person Signing this Report on Behalf of Reporting Manager:

Name Title City, State Date
Evans Apeadu Chief Financial Officer/Chief Compliance Officer Baltimore, Maryland 5/15/2015