Assay

Financial-condition grades for SEC filers

Company Report · as of Oct 9, 2026


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Otter Tail Corp.OTTR · utilities
GradeTortoiseCmiddle fifth of 148 graded peers; percentile 46.9, sampling error 3.6 points; lower is stronger
Rank70 of 148
ProfitabilityD/Epercentile 76.7
SolvencyApercentile 16.1
Growth and financingCpercentile 51.5
Reliability0.94 AUCfailure model, filers with over $2.67B assets; 95% interval 0.88 to 0.97; 61 events, 2020 to 2025
Peer failure rate0.52% a yearItem 1.03 bankruptcies, same asset band, 2012 to 2025
Size bandover $2.67B assetstotal assets $4.0B[1]
Standard universeinsiderevenue above $1M and assets above $10M[1-2]
Warningsnone activenot computable: distress
Inputs computable7 of 14
Graded fromfilings received through Feb 23, 2026228 days before the rescan; every figure keyed to the SEC receipt date
Last close$88.322026-10-08; market equity $3.7B; iex feed
Price used in gradeNone
Share price, twelve months to the rescansplit-adjusted close; a lollipop at every rescan carries the letter held then; baseline ticks are SEC receipt dates of the inputs; ranges and dragging scroll the full history
$80$90NovDecJanFebMarAprMayJunJulAugSepOctBC/DC$88.33
ABCDE20132014201520162017201820192020202120222023202420252026

Percentile at every rescan on file, Jan 21, 2012 to Oct 9, 2026; stronger toward the top. Hover for the date.

Open this report as it stood on

Letter setLetterPercentileBand
Jan 21, 2012nonen/aQ4
Mar 21, 2014D/E80.9Q4
Mar 21, 2015nonen/aQ4
Feb 21, 2018D63.8Q4
Mar 21, 2018C57.9Q4
Jul 21, 2018C/D58.9Q4
Mar 21, 2019C55.5Q4
Feb 21, 2021D69.1Q4
Feb 21, 2022C51.5Q5
Mar 21, 2022A10.2Q5
Feb 21, 2023nonen/aQ5
Feb 21, 2024B33.8Q5
Mar 21, 2024B/C38.9Q5
Feb 21, 2025B33.8Q5
Feb 21, 2026C/D56.4Q5
Mar 21, 2026C53.5Q5

Each date opens the report as it stood on that rescan.

Business, in the company's words. Opening of Item 1 of the 10-K received Feb 18, 2026; the document on sec.gov.

Otter Tail Corporation (OTC) is a holding company which has strategically invested in a portfolio of diversified operations including an electric utility and manufacturing and plastic pipe businesses. Our corporate offices are located in Fergus Falls, Minnesota and Fargo, North Dakota. We classify our five operating companies into three reportable segments consistent with our business strategy and management structure. The following table depicts our three segments and the subsidiary entities included within each segment: Otter Tail Power Company (OTP)BTD Manufacturing, Inc. (BTD)Northern Pipe Products, Inc. (Northern Pipe) T.O. Plastics, Inc. (T.O.

The Fourteen Inputs [top]

Lower percentile is stronger. Source numbers open the SEC filing; a range that spans filings opens the sources table.

InputPercentile, 0 to 100ValueSourcePeer medianPercentilePeersPeriod end
Profitability, sleeve percentile 76.7
Gross profitabilitynot computable17.5%
one or more required annual facts are missing
Return on invested capitalnot computable6.0%
latest aligned inputs end 2021-12-31; latest annual assets end 2025-12-31
Accruals ratio(2.9%)[1,3-5](5.0%)76.72712025-12-31
Gross margin stability, five yearsnot computable4.6 pts
five annual gross margins are required; found 0
Solvency, sleeve percentile 16.1
Twelve-month failure probabilitynot computable0.06%
liabilities and a nearby cover-page share count are required at 2026-06-30
Altman Z double-primenot computable1.48
one or more required annual facts are missing
Net debt to EBITDA1.24x[6-9]3.63x21.61172025-12-31
Interest coveragenot computable2.37x
latest aligned inputs end 2023-12-31; latest annual assets end 2025-12-31
Current ratio2.28x[10-11]0.97x10.72822025-12-31
Growth and financing, sleeve percentile 51.5
Revenue growth, three-year compound(3.9%)[2,12-14]0.7%71.92222025-12-31
Free cash flow growth, three-year compound(23.4%)[4,15-21](11.8%)68.5552025-12-31
Reinvestment ratenot computable59.0%
latest aligned inputs end 2021-12-31; latest annual assets end 2025-12-31
Asset growth, three years11.0%[1,5,22-23]6.4%22.42462025-12-31
Net share issuance, one year0.3%[24-25]0.4%42.91572026-02-12

Gross profitability. Revenue less cost of goods sold, over total assets.

Accruals ratio. Net income less operating cash flow, over average assets; lower is stronger.

Gross margin stability, five years. Standard deviation of gross margin; lower is stronger.

Twelve-month failure probability. CHS model; lower is stronger.

Net debt to EBITDA. Lower is stronger.

Net share issuance, one year. Split-adjusted; lower is stronger.

Sleeves are equal-weighted; within a sleeve each computable input carries equal weight. Composite -0.042; sampling error 3.6 percentile points on 148 peers.

Among 148 Peers [top]

ABCDECOP, Conocophillips; A, percentile 4.8; market equity $161.2BCOPVLO, Valero Energy Corp/Tx; B, percentile 24.5; market equity $127.8BVLOMPC, Marathon Petroleum Corp.; B, percentile 26.5; market equity $130.1BMPCCVX, Chevron Corp.; B, percentile 29.9; market equity $418.0BCVXCEG, Constellation Energy Corp.; B, percentile 31.3; market equity $101.0BCEGPSX, Phillips 66; B/C, percentile 40.8; market equity $112.4BPSXOTTR 46.9strongerweaker

Composite score of every graded peer, smoothed. Vertical rules are the letter band edges at the 20th, 40th, 60th and 80th percentiles. Small dots are the six largest peers by market equity.

RankCompanyPercentileLetterWarnings
65Nacco Industries Inc. (NC)

Nacco Industries Inc. (NC)

B/Con the B/C boundary; percentile 43.5

NYSE · Bituminous Coal & Lignite Surface Mining

last close $36.58

No active warnings; 9 of 14 inputs

43.5B/C
66EQT Corp. (EQT)

EQT Corp. (EQT)

Cmiddle fifth; percentile 44.2

NYSE · Crude Petroleum & Natural Gas

market equity $33.1B; last close $52.97

No active warnings; 12 of 14 inputs

44.2C
67Targa Resources Corp. (TRGP)

Targa Resources Corp. (TRGP)

Cmiddle fifth; percentile 44.9

NYSE · Natural Gas Transmission

market equity $61.9B; last close $288.48

No active warnings; 11 of 14 inputs

44.9C
68Vistra Corp. (VST)

Vistra Corp. (VST)

Cmiddle fifth; percentile 45.6

NYSE · Electric Services

market equity $52.4B; last close $156.09

No active warnings; 9 of 14 inputs

45.6C
69Public Service Enterprise Group Inc. (PEG)

Public Service Enterprise Group Inc. (PEG)

Cmiddle fifth; percentile 46.3

NYSE · Electric & Other Services Combined

market equity $35.8B; last close $71.85

No active warnings; 7 of 14 inputs

46.3C
70Otter Tail Corp. (OTTR)

Otter Tail Corp. (OTTR)

Cmiddle fifth; percentile 46.9

Nasdaq · Electric Services

market equity $3.7B; last close $88.32

No active warnings; 7 of 14 inputs

46.9C
71Nabors Industries Ltd. (NBR)

Nabors Industries Ltd. (NBR)

Cmiddle fifth; percentile 47.6

NYSE · Drilling Oil & Gas Wells

market equity $1.3B; last close $81.20

Warnings: dilution; 8 of 14 inputs

47.6Cdilution
72Cheniere Energy, Inc. (LNG)

Cheniere Energy, Inc. (LNG)

Cmiddle fifth; percentile 48.3

NYSE · Natural Gas Distribution

market equity $57.4B; last close $277.87

No active warnings; 10 of 14 inputs

48.3C
73Enterprise Products Partners L.P. (EPD)

Enterprise Products Partners L.P. (EPD)

Cmiddle fifth; percentile 49.0

NYSE · Natural Gas Transmission

last close $36.75

No active warnings; 8 of 14 inputs

49.0C
74Alpha Metallurgical Resources, Inc. (AMR)

Alpha Metallurgical Resources, Inc. (AMR)

Cmiddle fifth; percentile 49.7

NYSE · Bituminous Coal & Lignite Surface Mining

market equity $2.2B; last close $173.98

Warnings: fortress balance sheet; 10 of 14 inputs

49.7Cfortress balance sheet
75Chesapeake Utilities Corp. (CPK)

Chesapeake Utilities Corp. (CPK)

Cmiddle fifth; percentile 50.3

NYSE · Natural Gas Transmisison & Distribution

market equity $3.1B; last close $128.29

No active warnings; 9 of 14 inputs

50.3C
Peer policyLetterPercentilePeers
all graded filers, equal sleevesD69.52204
sector peers, equal sleeves (the grade)C46.9148
same exchange, equal sleevesD74.51219
sector peers, equal inputsB32.7148

Each letter is one fifth of the 148 graded peers, about 29 companies. A boundary letter (A/B, B/C, C/D, D/E) marks a percentile within one sampling error of a band edge.

What the Price Implies [top]

Market measures at the 2026-10-08 close. None enters the grade. Percentile among graded peers with the same measure.

MeasureValuePeer medianPercentileReading
Twelve-month price change, skipping the latest month13.2%15.5%47hotter than 47 of 100 peers
Distance from 52-week high(6.3%)(15.4%)83closer to its high than 83 of 100 peers
EBIT to enterprise value7.6%4.6%80pricier than 20 of 100 peers
Free cash flow yield2.6%1.3%57pricier than 43 of 100 peers
Book value to price0.510.5345pricier than 55 of 100 peers
Sales to price0.350.4541pricier than 59 of 100 peers
Composite equity issuance, five years(12.6%)(7.2%)40more equity-funded than 40 of 100 peers
Relative strength against the sector, log excess return0.140.0466ahead of 66 of 100 peers

Inputs: market equity $3.7B; EBIT $345.7M; free cash flow $97.9M; book equity $1.9B; sales $1.3B; debt $1.1B; cash $278.4M[26].

Diagnostics [top]

Diagnostics do not feed the grade.

Piotroski F-score: None of 9, period end 2025-12-31
Return on assets above zero7.6%✓ pass[3,5]
Operating cash flow above zero$386.0M✓ pass[4]
Return on assets improved(1.7 pts)✗ fail[3,5,22,27]
Operating cash flow exceeds net income$110.1M✓ pass[3-4]
Long-term leverage fell(2.1 pts)✓ pass[1,5-6,22,28]
Current ratio improved24.5 pts✓ pass[10-11,29-30]
No new shares issued0.3%✗ fail[24-25]
Gross margin improvedn/a
Asset turnover improved(5.3 pts)✗ fail[2,5,12,22]
Cash, filings, liquidity
Cash and equivalents$278.4M[31]
Operating cash flow, four quarters$409.3M[4,31-35]
Months of runwaynot finite
trailing operating cash flow is nonnegative, so runway is not finite
Late filings, two years0
NT 10-K or NT 10-Q
Days since last periodic filing65
10-Q received Aug 5, 2026
Median daily dollar volume$18.1M
63 sessions
Days since newest grade input228

Downloads [top]

Sources [top]

Every citation on this page. Filing opens the SEC index page for that submission; viewer opens the SEC interactive data for the same filing; series opens the SEC XBRL API record for that tag and company.

#ConceptXBRL tagValuePeriod endReceivedFormLinks
1assetsus-gaap:Assets$4.0B2025-12-312026-02-2310-K/Afiling · viewer · series
2revenueus-gaap:RevenueFromContractWithCustomerExcludingAssessedTax$1.3B2025-12-312026-02-2310-K/Afiling · viewer · series
3net incomeus-gaap:NetIncomeLoss$275.9M2025-12-312026-02-2310-K/Afiling · viewer · series
4operating cash flowus-gaap:NetCashProvidedByUsedInOperatingActivities$386.0M2025-12-312026-02-2310-K/Afiling · viewer · series
5assetsus-gaap:Assets$3.7B2024-12-312026-02-2310-K/Afiling · viewer · series
6total debtus-gaap:LongTermDebt$963.6M2025-12-312026-02-2310-K/Afiling · viewer · series
7cashus-gaap:CashAndCashEquivalentsAtCarryingValue$386.2M2025-12-312026-02-2310-K/Afiling · viewer · series
8operating incomeus-gaap:OperatingIncomeLoss$345.7M2025-12-312026-02-2310-K/Afiling · viewer · series
9depreciation amortizationus-gaap:DepreciationDepletionAndAmortization$118.1M2025-12-312026-02-2310-K/Afiling · viewer · series
10current assetsus-gaap:AssetsCurrent$799.7M2025-12-312026-02-2310-K/Afiling · viewer · series
11current liabilitiesus-gaap:LiabilitiesCurrent$351.0M2025-12-312026-02-2310-K/Afiling · viewer · series
12revenueus-gaap:RevenueFromContractWithCustomerExcludingAssessedTax$1.3B2024-12-312026-02-2310-K/Afiling · viewer · series
13revenueus-gaap:Revenues$1.4B2023-12-312026-02-2310-K/Afiling · viewer · series
14revenueus-gaap:Revenues$1.5B2022-12-312025-02-1910-Kfiling · viewer · series
15capital expenditureus-gaap:PaymentsToAcquireProductiveAssets$288.1M2025-12-312026-02-2310-K/Afiling · viewer · series
16operating cash flowus-gaap:NetCashProvidedByUsedInOperatingActivities$452.7M2024-12-312026-02-2310-K/Afiling · viewer · series
17capital expenditureus-gaap:PaymentsToAcquireProductiveAssets$358.6M2024-12-312026-02-2310-K/Afiling · viewer · series
18operating cash flowus-gaap:NetCashProvidedByUsedInOperatingActivities$404.5M2023-12-312026-02-2310-K/Afiling · viewer · series
19capital expenditureus-gaap:PaymentsToAcquireProductiveAssets$287.1M2023-12-312026-02-2310-K/Afiling · viewer · series
20operating cash flowus-gaap:NetCashProvidedByUsedInOperatingActivities$389.3M2022-12-312025-02-1910-Kfiling · viewer · series
21capital expenditureus-gaap:PaymentsToAcquireProductiveAssets$171.1M2022-12-312025-02-1910-Kfiling · viewer · series
22assetsus-gaap:Assets$3.2B2023-12-312025-02-1910-Kfiling · viewer · series
23assetsus-gaap:Assets$2.9B2022-12-312024-02-1410-Kfiling · viewer · series
24shares outstandingdei:EntityCommonStockSharesOutstanding41,953,5252026-02-122026-02-2310-K/Afiling · viewer · series
25shares outstandingdei:EntityCommonStockSharesOutstanding41,827,9992025-01-312025-02-1910-Kfiling · viewer · series
26shares outstandingdei:EntityCommonStockSharesOutstanding41,985,5802026-07-312026-08-0510-Qfiling · viewer · series
27net incomeus-gaap:NetIncomeLoss$301.7M2024-12-312026-02-2310-K/Afiling · viewer · series
28long term debtus-gaap:LongTermDebt$943.7M2024-12-312026-02-2310-K/Afiling · viewer · series
29current assetsus-gaap:AssetsCurrent$630.0M2024-12-312026-02-2310-K/Afiling · viewer · series
30current liabilitiesus-gaap:LiabilitiesCurrent$309.8M2024-12-312026-02-2310-K/Afiling · viewer · series
31cashus-gaap:CashAndCashEquivalentsAtCarryingValue$278.4M2026-06-302026-08-0510-Qfiling · viewer · series
32operating cash flowus-gaap:NetCashProvidedByUsedInOperatingActivities$182.7M2026-06-302026-08-0510-Qfiling · viewer · series
33operating cash flowus-gaap:NetCashProvidedByUsedInOperatingActivities$70.6M2026-03-312026-05-0610-Qfiling · viewer · series
34operating cash flowus-gaap:NetCashProvidedByUsedInOperatingActivities$288.9M2025-09-302025-11-0510-Qfiling · viewer · series
35operating cash flowus-gaap:NetCashProvidedByUsedInOperatingActivities$159.4M2025-06-302026-08-0510-Qfiling · viewer · series

Limitations [top]

Grade boundary. Percentile 46.9 is 6.9 points from the nearest band edge; sampling error is 3.6 points.

Peer group. Sector assignment from four-digit SIC codes, hand-tuned and published. The grade under three alternative peer policies is tabled above.

Size. Within a sector the letter tracks size. Among graded filers in the smallest asset band, 72% grade E and 0% grade A; in the largest, 13% grade E and 21% grade A. Universe as of Oct 9, 2026.

Failure model. filings 2012-01-01 to 2019-12-31 fit, filings 2020-01-01 to 2025-12-31 test; status post hoc pending confirmation. pre-registered on 2026 filings once their 12-month outcome windows close; supported if the paired per-quintile gain over the pooled model has a lower bound above 0.05.

Input validity. Revenue or total assets at or below $100,000 sets the degenerate-inputs flag. An input whose denominator is at or below $100,000 is left not computable rather than ranked.

Returns. No input on this page has a post-2015 confidence interval on returns that excludes zero. The grade ranks reported financial condition and is not a return forecast.