OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

Aperio Group, LLC's Holding History (CIK: 0001364615)

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

Q4 2020
Shares 6,610 Value ($000) $282 Avg Close $35.50 Range $31.11 - $38.92
Q3 2020
Shares 7,017 Value ($000) $254 Avg Close $33.22 Range $30.66 - $36.11
Q2 2020
Shares 10,422 Value ($000) $404 Avg Close $35.99 Range $31.54 - $41.04
Q1 2020
Shares 17,020 Value ($000) $757 Avg Close $42.27 Range $26.34 - $48.43
Q4 2019
Shares 14,870 Value ($000) $763 Avg Close $43.72 Range $40.72 - $48.47
Q3 2019
Shares 14,402 Value ($000) $774 Avg Close $43.78 Range $40.10 - $46.25
Q2 2019
Shares 14,801 Value ($000) $782 Avg Close $42.32 Range $40.14 - $44.48
Q1 2019
Shares 11,543 Value ($000) $575 Avg Close $40.53 Range $37.77 - $42.81
Q4 2018
Shares 9,837 Value ($000) $488 Avg Close $39.10 Range $36.10 - $42.66
Q3 2018
Shares 8,508 Value ($000) $408 Avg Close $39.34 Range $38.11 - $40.62
Q2 2018
Shares 8,174 Value ($000) $389 Avg Close $36.40 Range $34.04 - $39.53
Q1 2018
Shares 8,334 Value ($000) $361 Avg Close $33.54 Range $29.25 - $35.88
Q4 2017
Shares 7,025 Value ($000) $312 Avg Close $36.46 Range $34.36 - $38.83
Q3 2017
Shares 6,919 Value ($000) $300 Avg Close $32.68 Range $30.48 - $35.27
Q2 2017
Shares 6,987 Value ($000) $277 Avg Close $30.80 Range $28.67 - $32.99
Q1 2017
Shares 9,650 Value ($000) $366 Avg Close $29.42 Range $27.80 - $31.55
Q4 2016
Shares 8,552 Value ($000) $349 Avg Close $28.65 Range $25.36 - $32.91
Q3 2016
Shares 9,232 Value ($000) $319 Avg Close $26.40 Range $24.99 - $27.92