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Otter Tail (OTTR)

Otter Tail on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as electric services.

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4.8M

Short interest

settlement 2026-09-30

16.3

Days to cover

-6.7 days vs prior

37.3%

Short share of volume

2026-10-12

15

Fails to deliver

settlement 2026-09-14

Tue 3 Nov

Next earnings

estimated date

-$394K

Insider flow, 90 days

0 buys, 3 sells

As of 2026-10-12.

Short interest

FINRA, twice a month. The newest 24 settlements in the table, 48 in the chart. JSON

As of 30 September 2026, short interest in OTTR is 4,814,876 shares, up 9,755 shares over the last month. Over the last 48 readings it ranged from 3,969,582 shares (31 October 2024) to 5,590,288 shares (15 May 2026). At the reported average volume of 296K shares a day that is 16.3 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-09-304,814,876+0.5%295,61116.29
2026-09-154,790,407-0.3%208,37822.99
2026-08-314,805,121-1.6%180,42726.63
2026-08-144,881,890-4.1%282,34617.29
2026-07-315,092,017-4.1%221,97522.94
2026-07-155,308,740+0.8%217,11624.45
2026-06-305,265,091+2.7%351,66614.97
2026-06-155,127,619-5.8%239,00321.45
2026-05-295,444,521-2.6%215,85325.22
2026-05-155,590,288+0.6%285,01519.61
2026-04-305,556,248+2.3%297,20018.70
2026-04-155,429,527-2.4%234,20123.18
2026-03-315,559,919+2.6%325,49317.08
2026-03-135,419,901-0.2%266,53120.33
2026-02-275,430,715+2.6%292,53718.56
2026-02-135,291,374+6.7%269,81619.61
2026-01-304,960,624-1.3%168,52129.44
2026-01-155,023,672+0.7%204,68024.54
2025-12-314,991,120+2.0%295,35716.90
2025-12-154,891,491+0.8%198,38624.66
2025-11-284,852,237-4.6%272,89217.78
2025-11-145,087,330-3.4%259,14419.63
2025-10-315,267,298-0.3%167,15731.51
2025-10-155,281,593+5.0%177,41829.77

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 12 October 2026, the short share of OTTR volume is 37.3%, down 7.9 points over the last five sessions. Over the last 30 readings it ranged from 37.3% (12 October 2026) to 87.4% (15 September 2026). The latest reading sits at the bottom of that range. The latest reading is 24.7 points below the 30-session average of 62.0%, on 57K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-10-1221K57K37.3%0
2026-10-0924K33K73.6%0
2026-10-0853K75K70.7%0
2026-10-0749K74K66.3%0
2026-10-0647K79K58.8%0
2026-10-0538K84K45.2%0
2026-10-0234K72K46.8%0
2026-10-0136K56K63.7%0
2026-09-3030K57K52.6%0
2026-09-2918K34K53.2%0
2026-09-2826K49K52.3%0
2026-09-2532K51K62.2%0
2026-09-2449K69K70.9%73
2026-09-2335K56K62.4%0
2026-09-2231K66K46.8%0
2026-09-2141K69K59.9%0
2026-09-1872K97K74.6%0
2026-09-1750K73K68.8%4,326
2026-09-1635K52K67.8%0
2026-09-1565K74K87.4%0
2026-09-1450K71K69.9%0
2026-09-1131K43K72.1%0
2026-09-1046K63K73.0%901
2026-09-0956K77K71.8%0
2026-09-0842K61K69.2%0
2026-09-0441K67K60.4%154
2026-09-0340K77K52.7%139
2026-09-0231K53K58.3%0
2026-09-0133K54K60.2%0
2026-08-3128K55K51.7%0

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 14 September 2026, the fails-to-deliver balance in OTTR is 15 shares, down 891 shares over the last settlement date. Over the last 30 readings it ranged from 9 shares (10 August 2026) to 7,557 shares (3 September 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-09-1415$88.06$1K
2026-09-10906$89.57$81K
2026-09-091,788$90.14$161K
2026-09-037,557$88.88$672K
2026-09-0243$89.59$4K
2026-09-0116$90.47$1K
2026-08-2698$91.33$9K
2026-08-25178$92.05$16K
2026-08-243,795$90.86$345K
2026-08-21395$92.04$36K
2026-08-2090$92.34$8K
2026-08-1498$92.87$9K
2026-08-132,777$92.14$256K
2026-08-1259$94.28$6K
2026-08-109$93.79$844
2026-08-06653$92.90$61K
2026-08-05235$92.82$22K
2026-08-0481$90.16$7K
2026-07-30148$90.77$13K
2026-07-29679$93.59$64K
2026-07-2860$92.07$6K
2026-07-202,348$92.83$218K
2026-07-1771$93.26$7K
2026-07-161,306$90.18$118K
2026-07-085,717$90.85$519K
2026-07-01182$89.98$16K
2026-06-301,133$88.87$101K
2026-06-181,754$86.73$152K
2026-06-0358$85.80$5K
2026-06-02631$83.62$53K

Insider trades

SEC Form 4, newest first, 50 of 100 shown. JSON

Insiders at OTTR reported 3 open-market sells worth $394K in the last 90 days and no open-market buys. Latest filing: KNUTSON PAUL L (VP, Human Resources) on 2026-08-11.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-08-11KNUTSON PAUL LVP, Human ResourcesSell475$94.63$45K0
2026-08-10KNUTSON PAUL LVP, Human ResourcesSell250$92.84$23K0
2026-08-07KNUTSON PAUL LVP, Human ResourcesGift250$0.00$0250
2026-08-07KNUTSON PAUL LVP, Human ResourcesGift475$0.00$0475
2026-08-07KNUTSON PAUL LVP, Human ResourcesGift725$0.00$021K
2026-08-07KNUTSON PAUL LVP, Human ResourcesSell4K$93.11$326K21K
2026-04-13PARTAIN NATHAN IDirectorGrant2Kprice not stated in the filingnot stated11K
2026-04-13LeBeau Michael EDirectorGrant2Kprice not stated in the filingnot stated9K
2026-04-13Clark Christopher BDirectorGrant2Kprice not stated in the filingnot stated2K
2026-04-13Rasche Steven PDirectorGrant2Kprice not stated in the filingnot stated2K
2026-04-13WEBB THOMAS JDirectorGrant2Kprice not stated in the filingnot stated18K
2026-04-13Crain Jeanne HDirectorGrant2Kprice not stated in the filingnot stated7K
2026-04-13ERICKSON JOHN DDirectorGrant2Kprice not stated in the filingnot stated3K
2026-04-13Ludford Mary EDirectorGrant2Kprice not stated in the filingnot stated7K
2026-04-13Johnson Kathryn ODirectorGrant2Kprice not stated in the filingnot stated29K
2026-04-08Wahlund Todd RChief Financial OfficerTax withholding186$90.11$17K10K
2026-04-08Wahlund Todd RChief Financial OfficerOption exercise460$90.11$41K11K
2026-02-11Smestad Jennifer O.VP, General Council & Corp SecTax withholding3K$86.43$262K19K
2026-02-11Smestad Jennifer O.VP, General Council & Corp SecGrant6K$86.43$519K22K
2026-02-11ROGELSTAD TIMOTHY JSr VP, Electric PlatformTax withholding4K$86.43$364K61K
2026-02-11ROGELSTAD TIMOTHY JSr VP, Electric PlatformGrant8K$86.43$726K65K
2026-02-11MACFARLANE CHARLES SPresident & CEOTax withholding24K$86.43$2.0M252K
2026-02-11MACFARLANE CHARLES SPresident & CEOGrant48K$86.43$4.1M275K
2026-02-11KNUTSON PAUL LVP, Human ResourcesTax withholding2K$86.43$138K25K
2026-02-11KNUTSON PAUL LVP, Human ResourcesGrant4K$86.43$311K27K
2026-02-11Abbott John SSr VP, Manufacturing PlatformTax withholding4K$86.43$364K51K
2026-02-11Abbott John SSr VP, Manufacturing PlatformGrant8K$86.43$726K55K
2026-02-06Smestad Jennifer O.VP, General Council & Corp SecOption exercise1Kprice not stated in the filingnot stated17K
2026-02-06Smestad Jennifer O.VP, General Council & Corp SecTax withholding541$87.83$48K16K
2026-02-06KNUTSON PAUL LVP, Human ResourcesOption exercise700price not stated in the filingnot stated23K
2026-02-06KNUTSON PAUL LVP, Human ResourcesTax withholding279$87.83$25K23K
2026-02-06Abbott John SSr VP, Manufacturing PlatformTax withholding763$87.83$67K47K
2026-02-06Abbott John SSr VP, Manufacturing PlatformOption exercise2Kprice not stated in the filingnot stated47K
2026-02-06MACFARLANE CHARLES SPresident & CEOTax withholding4K$87.83$376K227K
2026-02-06MACFARLANE CHARLES SPresident & CEOOption exercise9Kprice not stated in the filingnot stated232K
2026-02-06ROGELSTAD TIMOTHY JSr VP, Electric PlatformTax withholding763$87.83$67K57K
2026-02-06ROGELSTAD TIMOTHY JSr VP, Electric PlatformOption exercise2Kprice not stated in the filingnot stated58K
2026-02-06Wahlund Todd RChief Financial OfficerOption exercise675price not stated in the filingnot stated10K
2026-02-06Wahlund Todd RChief Financial OfficerTax withholding119$87.83$10K10K
2025-04-13WEBB THOMAS JDirectorGrant2Kprice not stated in the filingnot stated16K
2025-04-13Ludford Mary EDirectorGrant2Kprice not stated in the filingnot stated5K
2025-04-13LeBeau Michael EDirectorGrant2Kprice not stated in the filingnot stated8K
2025-04-13ERICKSON JOHN DDirectorGrant2Kprice not stated in the filingnot stated3K
2025-04-13PARTAIN NATHAN IDirectorGrant2Kprice not stated in the filingnot stated9K
2025-04-13Crain Jeanne HDirectorGrant2Kprice not stated in the filingnot stated5K
2025-04-13Johnson Kathryn ODirectorGrant2Kprice not stated in the filingnot stated28K
2025-04-13FRITZE STEVEN LDirectorGrant2Kprice not stated in the filingnot stated31K
2025-04-08Wahlund Todd RChief Financial OfficerTax withholding308$75.39$23K9K
2025-04-08Wahlund Todd RChief Financial OfficerOption exercise600$75.39$45K9K
2025-02-12Smestad Jennifer O.VP, General Council & Corp SecTax withholding3K$79.62$210K16K

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

3 holders report 5% or more of OTTR in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Portfolio Management at 7.1% of the class (2,963,293 shares), filed 2026-04-29 for an event on 2026-03-31.

FiledFormHolderSharesOf classEvent
2026-08-0713GSTATE STREET CORPORATIONparent holding company2.1M5.1%2026-06-30
2026-04-3013GVanguard Capital Managementinvestment adviser2.2M5.2%2026-03-31
2026-04-2913GVanguard Portfolio Managementinvestment adviser3.0M7.1%2026-03-31
2026-03-2713G/Ano. 14The Vanguard Groupinvestment adviser00.0%2026-03-13

13F holders

Tracked managers holding OTTR at their latest 13F. JSON

7 of the 30 tracked managers held OTTR at their latest 13F, $120.7M in total at quarter-end prices. Two Sigma Investments is the largest at $65.3M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 3 cut.

FundQuarterSharesValueOf portfolioChange in shares
Two Sigma Investments2026-06-30726K$65.3M0.05%+63K
D. E. Shaw & Co.2026-06-30447K$40.2M0.02%+48K
Millennium Management2026-06-3071K$6.4M0.00%-59K
Citadel Advisors2026-06-3036K$3.2M0.00%-15K
AQR Capital Management2026-06-3029K$2.6M0.00%+7K
Renaissance Technologies2026-06-3023K$2.1M0.00%+17K
Bridgewater Associates2026-06-309K$769K0.00%-7K

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

What this page is

Otter Tail in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows Otter Tail (OTTR), SEC CIK 1466593, listed on Nasdaq, classified by the SEC as electric services. The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest
FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-12.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-14.JSON and CSV
Large holders
SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-07.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Earnings dates
SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-04.JSON and CSV
Insider trades
SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-08-11.JSON and CSV
Company record
EDGAR filing index for CIK 1466593Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
10 requests a minute without a key, 30 with a free key from a free account.

How to read it

  • Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
  • Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
  • Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Other companies the SEC classifies as electric services

Datasets

Frequently Asked Questions

How much of OTTR is sold short?
4,814,876 shares were held short at the 2026-09-30 settlement, 16.3 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is OTTR's daily short volume?
On 2026-10-12, 21,340 of the 57,144 OTTR shares reported to FINRA were sold short, 37.3% of the day's reported volume. Short volume is a flow for one day, not a position.
Does OTTR have fails to deliver?
The SEC's latest file shows 15 OTTR shares failed to deliver at settlement 2026-09-14. Fails are reported per settlement date and published twice a month with a lag.
Are OTTR insiders buying or selling?
Insiders at OTTR reported 3 open-market sells worth $394K in the last 90 days and no open-market buys. Latest filing: KNUTSON PAUL L (VP, Human Resources) on 2026-08-11.
Who owns 5% or more of OTTR?
3 holders report 5% or more of OTTR in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Portfolio Management at 7.1% of the class (2,963,293 shares), filed 2026-04-29 for an event on 2026-03-31.
Which tracked 13F managers own OTTR?
7 of the 30 tracked 13F managers held OTTR shares at their latest filing, $120.7M in all. The largest: Two Sigma Investments (726K shares, $65.3M), D. E. Shaw & Co. (447K shares, $40.2M), Izzy Englander's Millennium Management (71K shares, $6.4M), Ken Griffin's Citadel Advisors (36K shares, $3.2M), Cliff Asness's AQR Capital Management (29K shares, $2.6M), Renaissance Technologies (23K shares, $2.1M). The table above lists all 7.

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.