RSCM
APTX

Rock Springs Capital Management’s Aptinyx Inc. Common Stock APTX Stock Holding History

Rock Springs Capital Management’s Portfolio APTX Stock Details APTX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2019
Q1 		– Sell
-305,000
Closed -$5.04M – 138
2018
Q4 		$5.04M Hold
305,000
– – 0.24% 95
2018
Q3 		$8.83M Sell
305,000
-35,000
-10% -$851K 0.32% 89
2018
Q2 		$8.22M Buy
+340,000
New +$7.28M 0.32% 96

Other funds holding APTX

ASP
Adams Street Partners Chicago, Illinois $260M AUM 30.38% 1-Year Est. Return
NLVP
New Leaf Venture Partners New York $43M AUM 25.55% 1-Year Est. Return
FM
Frazier Management Seattle, Washington $1.12M AUM 151.58% 1-Year Est. Return
BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.11B AUM 171.34% 1-Year Est. Return
PHS
PFM Health Sciences San Francisco, California $1.1B AUM 57.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
FCM
Farallon Capital Management San Francisco, California $17.5B AUM 50.95% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Rock Springs Capital Management's APTX Position: Q1 2019 in Review

Rock Springs Capital Management sold out of Aptinyx Inc. Common Stock (APTX) in Q1 2019, closing a stake of 305,000 shares — an estimated $5.04M sold.

Rock Springs Capital Management first reported a position in APTX in Q2 2018 and held it in 3 quarters. The position peaked at $8.83M in Q3 2018. 67 funds tracked by Wall St. Rank hold APTX as of Q1 2019.

  • Rock Springs Capital Management reported no remaining Aptinyx Inc. Common Stock position as of Q1 2019 after selling out during the quarter.
  • Rock Springs Capital Management sold 305,000 Aptinyx Inc. Common Stock shares in Q1 2019, an estimated $5.04M.
  • Rock Springs Capital Management first reported a position in Aptinyx Inc. Common Stock in Q2 2018 and held it in 3 quarters.
  • Rock Springs Capital Management's Aptinyx Inc. Common Stock position peaked at $8.83M in Q3 2018.
  • 67 funds tracked by Wall St. Rank held Aptinyx Inc. Common Stock as of Q1 2019.

Based on Rock Springs Capital Management's 13F filing for Q1 2019, filed 15 May 2019.