VERTEX PHARMACEUTICALS INC

Ticker: VRTX CUSIP: 92532F100 Class: EQTY

Yorktown Management & Research Co Inc's Holding History (CIK: 0001313559)

Note: Option positions (PUT/CALL) are excluded.

Q3 2013
Shares 2,900 Value ($000) $220 Avg Close $79.58 Range $73.43 - $89.96
Q2 2013
Shares 2,900 Value ($000) $232 Avg Close $73.64 Range $51.28 - $87.47