WILLIAMS PARTNERS L P

CUSIP: 96950F104 Class: COM UNIT L P

RATIONAL ADVISORS LLC's Holding History (CIK: 0001143565)

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

Q4 2012
Shares 19,000 Value ($000) $925 Avg Close — Range —
Q3 2012
Shares 25,000 Value ($000) $1,367 Avg Close — Range —
Q2 2012
Shares 25,000 Value ($000) $1,306 Avg Close — Range —
Q1 2012
Shares 19,000 Value ($000) $1,075 Avg Close — Range —