PROSHARES TR

Ticker: SSO CUSIP: 74347R107 Class: PSHS ULT S&P 500

MOUNT VERNON ASSOCIATES INC /MD/'s Holding History (CIK: 0000799003)

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

Q3 2018

Shares 2,000 Value ($000) $255 Avg Close — Range —

Q2 2018

Shares 2,000 Value ($000) $223 Avg Close — Range —

Q1 2018

Shares 2,000 Value ($000) $211 Avg Close — Range —

Q4 2017

Shares 2,000 Value ($000) $219 Avg Close — Range —

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	2,000	$255	—	—
Q2 2018	2,000	$223	—	—
Q1 2018	2,000	$211	—	—
Q4 2017	2,000	$219	—	—