INTERACTIVE BROKERS GROUP IN

Ticker: IBKR CUSIP: 45841N107 Class: EQTY

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

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

Q4 2015

Shares 62,205 Value ($000) $2,712 Avg Close $9.71 Range $8.53 - $10.45

Q3 2015

Shares 44,354 Value ($000) $1,751 Avg Close $9.55 Range $8.25 - $10.65

Q2 2015

Shares 45,095 Value ($000) $1,874 Avg Close $8.40 Range $7.45 - $9.84

Q1 2015

Shares 39,800 Value ($000) $1,354 Avg Close $7.33 Range $5.89 - $7.99

Q3 2013

Shares 29,651 Value ($000) $557 Avg Close $3.86 Range $3.57 - $4.28

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	62,205	$2,712	$9.71	$8.53 - $10.45
Q3 2015	44,354	$1,751	$9.55	$8.25 - $10.65
Q2 2015	45,095	$1,874	$8.40	$7.45 - $9.84
Q1 2015	39,800	$1,354	$7.33	$5.89 - $7.99
Q3 2013	29,651	$557	$3.86	$3.57 - $4.28