POTASH CORP SASK INC

CUSIP: 73755L107 Class: COMMON STOCK-FO

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2017
Shares 346,370 Value ($000) $7,153 Avg Close — Range —
Q3 2017
Shares 328,705 Value ($000) $6,324 Avg Close — Range —
Q2 2017
Shares 435,697 Value ($000) $7,102 Avg Close — Range —
Q1 2017
Shares 405,022 Value ($000) $6,918 Avg Close — Range —
Q4 2016
Shares 290,842 Value ($000) $5,261 Avg Close — Range —
Q3 2016
Shares 245,315 Value ($000) $4,004 Avg Close — Range —
Q2 2016
Shares 122,577 Value ($000) $1,991 Avg Close — Range —
Q1 2016
Shares 25,560 Value ($000) $435 Avg Close — Range —
Q3 2015
Shares 24,915 Value ($000) $512 Avg Close — Range —
Q2 2015
Shares 63,805 Value ($000) $1,976 Avg Close — Range —
Q1 2015
Shares 7,253 Value ($000) $234 Avg Close — Range —
Q4 2014
Shares 791 Value ($000) $28 Avg Close — Range —
Q2 2013
Shares 100 Value ($000) $4 Avg Close — Range —