Yorktown Management & Research Co Inc - PROTHENA CORP PLC ownership

PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 106 filers reported holding PROTHENA CORP PLC in Q4 2013. The put-call ratio across all filers is 0.51 and the average weighting 0.1%.

Quarter-by-quarter ownership
Yorktown Management & Research Co Inc ownership history of PROTHENA CORP PLC
ValueSharesWeighting
Q1 2014$398,000
+44.2%
10,4000.0%0.08%
+35.7%
Q4 2013$276,00010,4000.06%
Other shareholders
PROTHENA CORP PLC shareholders Q4 2013
NameSharesValueWeighting ↓
RA Capital Management 1,554,918$59,569,0004.27%
Cormorant Asset Management, LP 350,000$13,409,0003.08%
Redmile Group, LLC 559,611$21,439,0002.56%
Ghost Tree Capital, LLC 110,000$4,214,0002.50%
Atika Capital Management LLC 57,500$2,203,0001.88%
Palo Alto Investors LP 1,065,836$40,832,0001.69%
Perceptive Advisors 350,000$13,409,0001.41%
Orbimed Advisors 1,889,000$72,368,0000.89%
Rock Springs Capital Management LP 65,000$2,490,0000.57%
Cupps Capital Management, LLC 164,199$6,290,0000.48%
View complete list of PROTHENA CORP PLC shareholders