NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

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

Q3 2018
Shares 243,098 Value ($000) $16,264 Avg Close — Range —
Q2 2018
Shares 231,100 Value ($000) $14,745 Avg Close — Range —
Q1 2018
Shares 212,917 Value ($000) $12,275 Avg Close — Range —
Q4 2017
Shares 209,402 Value ($000) $12,491 Avg Close — Range —
Q3 2017
Shares 204,001 Value ($000) $13,138 Avg Close — Range —
Q2 2017
Shares 182,781 Value ($000) $10,940 Avg Close — Range —
Q1 2017
Shares 172,928 Value ($000) $10,221 Avg Close — Range —
Q4 2016
Shares 156,333 Value ($000) $9,349 Avg Close — Range —
Q3 2016
Shares 152,357 Value ($000) $9,159 Avg Close — Range —
Q2 2016
Shares 144,851 Value ($000) $9,390 Avg Close — Range —
Q1 2016
Shares 144,665 Value ($000) $7,791 Avg Close — Range —
Q4 2015
Shares 141,809 Value ($000) $7,177 Avg Close — Range —
Q3 2015
Shares 133,538 Value ($000) $6,122 Avg Close — Range —
Q2 2015
Shares 127,942 Value ($000) $5,397 Avg Close — Range —
Q1 2015
Shares 185,039 Value ($000) $8,873 Avg Close — Range —
Q4 2014
Shares 171,827 Value ($000) $8,575 Avg Close — Range —
Q3 2014
Shares 170,696 Value ($000) $7,212 Avg Close — Range —
Q2 2014
Shares 160,514 Value ($000) $7,569 Avg Close — Range —
Q1 2014
Shares 103,449 Value ($000) $4,553 Avg Close — Range —
Q4 2013
Shares 95,242 Value ($000) $4,079 Avg Close — Range —
Q3 2013
Shares 87,830 Value ($000) $3,692 Avg Close — Range —
Q2 2013
Shares 80,609 Value ($000) $3,374 Avg Close — Range —