POWERSHARES QQQ TRUST

CUSIP: 73935A104 Class: COM

American Investment Services, Inc.'s Holding History (CIK: 0001369913)

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

Q1 2018
Shares 16,684 Value ($000) $2,672 Avg Close — Range —
Q4 2017
Shares 16,640 Value ($000) $2,592 Avg Close — Range —
Q3 2017
Shares 16,607 Value ($000) $2,415 Avg Close — Range —
Q2 2017
Shares 16,914 Value ($000) $2,328 Avg Close — Range —
Q1 2017
Shares 16,882 Value ($000) $2,235 Avg Close — Range —
Q4 2016
Shares 16,834 Value ($000) $1,995 Avg Close — Range —
Q3 2016
Shares 15,959 Value ($000) $1,895 Avg Close — Range —
Q2 2016
Shares 15,920 Value ($000) $1,712 Avg Close — Range —