VANGUARD NAT RES LLC

CUSIP: 92205F106 Class: CMN

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

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

Q3 2013
Shares 13,000 Value ($000) $364 Avg Close — Range —
Q4 2012
Shares 15,000 Value ($000) $390 Avg Close — Range —
Q3 2012
Shares 15,000 Value ($000) $434 Avg Close — Range —
Q2 2012
Shares 15,000 Value ($000) $389 Avg Close — Range —
Q1 2012
Shares 15,000 Value ($000) $414 Avg Close — Range —
Q4 2011
Shares 12,000 Value ($000) $332 Avg Close — Range —
Q3 2011
Shares 8,000 Value ($000) $209 Avg Close — Range —
Q2 2011
Shares 5,000 Value ($000) $141 Avg Close — Range —