Otter Tail Corporation
US ˙ NasdaqGS ˙ US6896481032

SecurityOTTR / Otter Tail Corporation
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership4,228 shares
Latest Disclosed Value $ 371,113
Mercer Global Advisors Inc /adv reports 20.08% increase in ownership of OTTR / Otter Tail Corporation

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 4,228 shares of Otter Tail Corporation (US:OTTR) valued at $371,092 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 3,521 shares of Otter Tail Corporation. This represents a change in shares of 20.08% during the quarter. The current value of the position is $366,864 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F OTTER TAIL COM 689648103 4,228 707 20.08 371 30.63 0.0005
2026-02-17 2025-12-31 13F OTTER TAIL COM 689648103 3,521 97 2.83 285 1.43 0.0004
2025-11-14 2025-09-30 13F OTTER TAIL COM 689648103 3,424 466 15.75 281 22.81 0.0005
2025-08-14 2025-06-30 13F OTTER TAIL COM 689648103 2,958 368 14.21 228 9.62 0.0005
2025-05-15 2025-03-31 13F OTTER TAIL COM 689648103 2,590 -397 -13.29 208 -5.45 0.0005
2025-02-14 2024-12-31 13F OTTER TAIL COM 689648103 2,987 -2,751 -47.94 221 -50.78 0.0005
2024-11-14 2024-09-30 13F OTTER TAIL COM 689648103 5,738 -1,172 -16.96 448 -26.12 0.0010
2024-08-12 2024-06-30 13F OTTER TAIL COM 689648103 6,910 -828 -10.70 605 0.0017
2024-05-15 2024-03-31 13F OTTER TAIL COM 689648103 7,738 1,162 17.67 1 0.0019
2024-02-15 2023-12-31 13F OTTER TAIL COM 689648103 6,576 -88 -1.32 1 0.0017
2023-11-15 2023-09-30 13F/A-1 OTTER TAIL COM 689648103 6,664 626 10.37 1 0.0019
2023-11-14 2023-09-30 13F OTTER TAIL COM 689648103 6,664 626 1 0.0019
2023-08-14 2023-06-30 13F OTTER TAIL COM 689648103 6,038 1,219 25.30 0 0.0019
2023-05-16 2023-03-31 13F OTTER TAIL COM 689648103 4,819 1,231 34.31 0 0.0016
2023-02-09 2022-12-31 13F OTTER TAIL COM 689648103 3,588 -810 -18.42 0 -100.00 0.0011
2022-11-15 2022-09-30 13F OTTER TAIL COM 689648103 4,398 71 1.64 271 -6.55 0.0016
2022-08-10 2022-06-30 13F OTTER TAIL COM 689648103 4,327 4,327 290 0.0018
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.