Otter Tail Corporation
DE ˙ DB ˙ US6896481032
72,50 € ↓ -1,00 (-1,36%)
2026-06-04
DEL PRIS
SecurityDE:OT4 / Otter Tail Corporation
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership6,610 shares
Latest Disclosed Value $ 580,160
Renaissance Technologies Llc reports 50.29% decrease in ownership of OT4 / Otter Tail Corporation

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 6,610 shares of Otter Tail Corporation (DE:OT4) valued at $489,140 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 13,298 shares of Otter Tail Corporation. This represents a change in shares of -50.29% during the quarter. The current value of the position is $479,225 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)
2026-05-14 2026-03-31 13F OTTER TAIL COM 689648103 6,610 -6,688 -50.29 580 -46.00 0.0009
2026-02-12 2025-12-31 13F OTTER TAIL COM 689648103 13,298 -94,612 -87.68 1,075 -87.86 0.0017
2025-11-13 2025-09-30 13F OTTER TAIL COM 689648103 107,910 68,800 175.91 8,845 193.46 0.0117
2025-08-13 2025-06-30 13F OTTER TAIL COM 689648103 39,110 39,110 3,015 0.0040
2025-05-14 2025-03-31 13F OTTER TAIL COM 689648103 0 -39,335 -100.00 0 -100.00
2025-02-13 2024-12-31 13F OTTER TAIL COM 689648103 39,335 -19,975 -33.68 2,904 -37.35 0.0043
2024-11-13 2024-09-30 13F OTTER TAIL COM 689648103 59,310 59,310 4,636 0.0070
2024-02-13 2023-12-31 13F OTTER TAIL COM 689648103 0 -6,004 -100.00 0 0.0000
2023-11-14 2023-09-30 13F OTTER TAIL COM 689648103 6,004 -19,500 -76.46 0 -100.00 0.0008
2023-08-11 2023-06-30 13F OTTER TAIL COM 689648103 25,504 -45,400 -64.03 2 -60.00 0.0029
2023-05-12 2023-03-31 13F OTTER TAIL COM 689648103 70,904 -64,400 -47.60 5 -28.57 0.0068
2023-02-13 2022-12-31 13F OTTER TAIL COM 689648103 135,304 -94,010 -41.00 8 -99.95 0.0109
2022-11-14 2022-09-30 13F OTTER TAIL COM 689648103 229,314 15,800 7.40 14,107 -1.58 0.0200
2022-08-12 2022-06-30 13F OTTER TAIL COM 689648103 213,514 -39,300 -15.55 14,333 -9.29 0.0170
2022-05-13 2022-03-31 13F OTTER TAIL COM 689648103 252,814 59,910 31.06 15,801 14.69 0.0185
2022-02-11 2021-12-31 13F OTTER TAIL COM 689648103 192,904 -26,000 -11.88 13,777 12.45 0.0171
2021-11-12 2021-09-30 13F OTTER TAIL COM 689648103 218,904 -26,110 -10.66 12,252 2.45 0.0158
2021-08-13 2021-06-30 13F OTTER TAIL COM 689648103 245,014 -68,700 -21.90 11,959 -17.43 0.0149
2021-05-13 2021-03-31 13F OTTER TAIL COM 689648103 313,714 -115,800 -26.96 14,484 -20.86 0.0180
2021-02-10 2020-12-31 13F OTTER TAIL COM 689648103 429,514 -258,128 -37.54 18,302 -26.42 0.0199
2020-11-13 2020-09-30 13F OTTER TAIL COM 689648103 687,642 -41,368 -5.67 24,872 -12.04 0.0248
2020-08-13 2020-06-30 13F OTTER TAIL COM 689648103 729,010 -122,390 -14.38 28,278 -25.30 0.0244
2020-05-14 2020-03-31 13F OTTER TAIL COM 689648103 851,400 -21,500 -2.46 37,853 -15.45 0.0368
2020-02-13 2019-12-31 13F OTTER TAIL COM 689648103 872,900 -44,400 -4.84 44,771 -9.20 0.0344
2019-11-13 2019-09-30 13F OTTER TAIL COM 689648103 917,300 -12,100 -1.30 49,305 0.45 0.0417
2019-08-12 2019-06-30 13F OTTER TAIL COM 689648103 929,400 -13,600 -1.44 49,082 4.47 0.0432
2019-05-14 2019-03-31 13F OTTER TAIL COM 689648103 943,000 -11,000 -1.15 46,980 -0.80 0.0427
2019-02-12 2018-12-31 13F OTTER TAIL COM 689648103 954,000 33,000 3.58 47,357 7.35 0.0518
2018-11-13 2018-09-30 13F OTTER TAIL COM 689648103 921,000 47,500 5.44 44,116 6.10 0.0454
2018-08-13 2018-06-30 13F/A-1 OTTER TAIL COM 689648103 873,500 25,990 3.07 41,579 13.17 0.0453
2018-08-13 2018-06-30 13F OTTER TAIL COM 689648103 847,510 36,740
2018-05-14 2018-03-31 13F OTTER TAIL COM 689648103 847,510 154,710 22.33 36,740 19.31 0.0402
2018-02-13 2017-12-31 13F OTTER TAIL COM 689648103 692,800 60,390 9.55 30,795 12.33 0.0340
2017-11-13 2017-09-30 13F OTTER TAIL COM 689648103 632,410 76,900 13.84 27,415 24.62 0.0323
2017-08-11 2017-06-30 13F OTTER TAIL COM 689648103 555,510 127,110 29.67 21,998 35.49 0.0281
2017-05-12 2017-03-31 13F OTTER TAIL COM 689648103 428,400 65,500 18.05 16,236 9.66 0.0227
2017-02-13 2016-12-31 13F OTTER TAIL COM 689648103 362,900 74,900 26.01 14,806 48.62 0.0234
2016-11-14 2016-09-30 13F OTTER TAIL COM 689648103 288,000 76,700 36.30 9,962 40.79 0.0176
2016-08-12 2016-06-30 13F OTTER TAIL COM 689648103 211,300 -19,210 -8.33 7,076 3.63 0.0135
2016-05-13 2016-03-31 13F OTTER TAIL COM 689648103 230,510 117,410 103.81 6,828 126.69 0.0130
2016-02-11 2015-12-31 13F OTTER TAIL COM 689648103 113,100 -75,907 -40.16 3,012 -38.86 0.0066
2015-11-12 2015-09-30 13F OTTER TAIL COM 689648103 189,007 66,902 54.79 4,926 51.66 0.0118
2015-08-14 2015-06-30 13F OTTER TAIL COM 689648103 122,105 63,895 109.77 3,248 73.41 0.0074
2015-05-13 2015-03-31 13F OTTER TAIL COM 689648103 58,210 41,600 250.45 1,873 264.40 0.0040
2015-02-13 2014-12-31 13F OTTER TAIL COM 689648103 16,610 -23,355 -58.44 514 -51.78 0.0012
2014-11-12 2014-09-30 13F OTTER TAIL COM 689648103 39,965 -80,445 -66.81 1,066 -70.77 0.0029
2014-08-13 2014-06-30 13F OTTER TAIL COM 689648103 120,410 60,048 99.48 3,647 96.18 0.0085
2014-05-14 2014-03-31 13F OTTER TAIL COM 689648103 60,362 60,362 -49.87 1,859 -49.03 0.0045
2013-11-13 2013-09-30 13F OTTER TAIL COM 689648103 0 -28,210 -100.00 0 -100.00
2013-08-12 2013-06-30 13F OTTER TAIL COM 689648103 28,210 28,210 801 0.0021
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.