PTC THERAPEUTICS INC

Ticker: PTCT CUSIP: 69366J200 Class: Common Stock

MASON STREET ADVISORS, LLC's Holding History (CIK: 0001167711)

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

Q4 2014

Shares 56,810 Value ($000) $2,941 Avg Close $44.02 Range $33.02 - $57.50

Q3 2014

Shares 56,810 Value ($000) $2,500 Avg Close $31.28 Range $22.70 - $47.20

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2014	56,810	$2,941	$44.02	$33.02 - $57.50
Q3 2014	56,810	$2,500	$31.28	$22.70 - $47.20