MEDIDATA SOLUTIONS INC

CUSIP: 58471A105 Class: COM

B. Riley Wealth Advisors, Inc.'s Holding History (CIK: 0001464811)

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

Q4 2014
Shares 41 Value ($000) $2 Avg Close — Range —
Q2 2014
Shares 470 Value ($000) $20,121 Avg Close — Range —