ASPEN TECHNOLOGY INC

CUSIP: 045327103 Class: COM

PDT Partners, LLC's Holding History (CIK: 0001564702)

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

Q3 2015
Shares 80,806 Value ($000) $3,063 Avg Close — Range —
Q2 2015
Shares 16,717 Value ($000) $761 Avg Close — Range —
Q1 2015
Shares 107,928 Value ($000) $4,154 Avg Close — Range —
Q3 2014
Shares 44,152 Value ($000) $1,665 Avg Close — Range —
Q2 2014
Shares 20,161 Value ($000) $935 Avg Close — Range —
Q3 2013
Shares 33,943 Value ($000) $1,173 Avg Close — Range —
Q2 2013
Shares 9,100 Value ($000) $262 Avg Close — Range —