NATIONAL PRESTO INDS INC

Ticker: NPK CUSIP: 637215104 Class: COM

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q1 2019
Shares 3,981 Value ($000) $432 Avg Close $116.40 Range $99.24 - $133.12
Q4 2018
Shares 12,557 Value ($000) $1,468 Avg Close $125.24 Range $109.50 - $133.95
Q1 2017
Shares 2,719 Value ($000) $277 Avg Close $103.21 Range $91.75 - $112.00