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Disclosery

OTTR OTTER TAIL CORP

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COM (common), issuer CIK 1466593

337 managers (347 13F filers) reported a position in OTTR shares at 2026-03-31, 29,243,048 shares in all. 24 filers opened a position and 30 filers sold out during the quarter.

Managers
337
13F filers
347
New
24
Added
137
Reduced
96
Sold out
30
Shares held by filers
29,243,048

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.6,424,374$564M0.01%+32,92713F-HRTimelineGroup
VANGUARD GROUP INCgroup of 7 filers holding5,144,405$452MnewTimeline
STATE STREET CORPin group STATE STREET CORP1,569,348$138M<0.01%+7,90813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,054,887$92.6M0.01%+35,62513F-HRTimelineGroup
LSV ASSET MANAGEMENT1,042,913$91.5M0.2%+505,97213F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP815,241$71.6M0.01%-35,48813F-HRTimelineGroup
GAMCO Investors (Gabelli)group of 2 filers holding732,000$64.2M-9,450Timeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP662,934$58.2M0.05%+391,28113F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY654,434$57.4M<0.01%+92,14513F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP606,504$53.2M0.04%-204,13413F-HRTimelineGroup
Caisse de depot et placement du Quebec569,933$50M0.08%+15,20013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co524,121$46M0.01%-8,57013F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC485,351$42.6M0.01%+156,19413F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP432,012$37.9M0.01%+17,23413F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.399,426$35.1M0.03%+151,18713F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp350,608$30.8M0.01%-7,96913F-HRTimelineGroup
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…342,000$30M0.05%-2,14913F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/336,483$29.5M<0.01%+11,36313F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO339,633$29.1M<0.01%-79,29513F-HR/ATimelineGroup
Qube Research & Technologies Ltd267,854$23.5M0.03%+66,58013F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC252,376$22.2M0.01%+123,96313F-HRTimeline
UBS Group AGgroup of 2 filers holding251,124$22M+62,233Timeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC231,889$20.4M0.01%+32,26613F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.225,173$19.8M<0.01%-6,00513F-HRTimelineGroup
Public Sector Pension Investment Board198,660$17.4M0.05%+4,74113F-HRTimeline
Nuveen, LLCin group TIAA189,228$16.6M<0.01%+37,20613F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA178,161$15.6M<0.01%+41,92413F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.167,565$14.7M0.02%-37,78113F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/132,470$11.6M<0.01%+87,92713F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC130,211$11.4M0.01%-16,30713F-HRTimelineGroup
Bank & Trust Co119,236$10.5M7.05%-2,78013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC117,441$10.3M0.01%-21,69613F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources112,072$9.84M<0.01%+75,07913F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\110,811$9.73M0.01%+74,07813F-HRTimelineGroup
WHITTIER TRUST CO99,012$8.77M0.1%+8,96613F-HRTimeline
RHUMBLINE ADVISERS98,929$8.68M0.01%+1,61813F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC95,749$8.4M<0.01%-2,74413F-HR/ATimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP95,162$8.35M0.01%-78,26713F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc94,077$8.26M<0.01%-9,25013F-HRTimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC90,439$7.94M0.03%-21,58213F-HRTimeline
DENALI ADVISORS LLC89,909$7.89M0.88%+1,20613F-HRTimeline
TUDOR INVESTMENT CORP ET AL85,866$7.54M0.04%+10,86113F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…81,968$7.19M0.01%+19,05013F-HRTimeline
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC80,353$7.05M0.02%-3,21613F-HRTimeline
HRT FINANCIAL LP78,965$6.93M0.02%-32,92913F-HRTimeline
Phocas Financial Corp.76,483$6.71M1.05%-21,19513F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …75,655$6.64M0.01%+19,42013F-HRTimelineGroup
ProShare Advisors LLC74,889$6.57M0.01%-4,74613F-HRTimeline
Swiss National Bank74,400$6.53M<0.01%013F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC69,619$6.11M0.01%-22,90513F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND69,282$6.08M0.01%013F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC63,482$5.57M<0.01%+23,56513F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS62,148$5.45M<0.01%-14,61813F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC61,627$5.41M0.01%-22,29913F-HRTimelineGroup
LPL Financial LLC58,438$5.13M<0.01%-5,61013F-HRTimeline
Man Group plcin group Man Group plc55,887$4.91M0.01%+8,56713F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC51,202$4.49M<0.01%-64,00713F-HRTimelineGroup
WHITTIER TRUST CO OF NEVADA INC48,935$4.33M0.09%+74913F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN48,477$4.25M<0.01%-29,25113F-HR/ATimelineGroup
Connor, Clark & Lunn Investment Managem…45,393$3.98M0.01%+13,48213F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…44,504$3.91M<0.01%+8,75013F-HRTimeline
Palisades Investment Partners, LLC44,369$3.89M1.53%+3,47813F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd43,823$3.85M0.07%+11,38913F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC43,312$3.8M<0.01%-22,58813F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC42,745$3.75M<0.01%+9513F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…42,250$3.71M0.01%+1,06313F-HRTimelineGroup
Vest Financial, LLC41,054$3.6M0.04%-13,42213F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P39,731$3.49M0.09%+6,49013F-HRTimeline
BENJAMIN EDWARDS INCin group BENJAMIN EDWARDS INC39,229$3.44M0.03%+93513F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\38,809$3.41M<0.01%+3,79213F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.41,723$3.37M<0.01%-4,16413F-HRTimeline
CITIGROUP INCin group CITIGROUP INC34,495$3.03M<0.01%-3,96813F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co34,295$3.01M0.01%-2,01913F-HRTimelineGroup
FIRST MANHATTAN CO. LLC.33,801$2.97M0.01%-4,40913F-HRTimeline
Financial Engines Advisors L.L.C.31,924$2.8M0.01%+1,33413F-HRTimeline
ROYCE & ASSOCIATES LP31,535$2.77M0.03%-19313F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC26,865$2.36M<0.01%+3,18013F-HRTimeline
Mariner, LLCin group Mariner, LLC26,345$2.31M<0.01%+79913F-HRTimelineGroup
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…25,969$2.28M0.01%-35013F-HRTimelineGroup
SG Americas Securities, LLC25,504$2.24M<0.01%+11,85013F-HRTimeline
JOHN G ULLMAN & ASSOCIATES INC25,450$2.23M0.3%+50013F-HRTimeline
OneAscent Financial Services LLCin group OneAscent Financial Services …25,018$2.2M0.12%new13F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC24,800$2.18M0.04%-10,80013F-HRTimeline
Linden Thomas Advisory Services, LLC22,663$1.99M0.19%+11,08713F-HRTimeline
FIFTH THIRD BANK, NATIONAL ASSOCIATIONgroup of 2 filers holding22,333$1.96M+16,936Timeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC22,037$1.93M<0.01%+6,10713F-HRTimelineGroup
Advisors Asset Management, Inc.21,304$1.87M0.03%+3,54213F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…21,267$1.87M0.01%+16913F-HRTimelineGroup
Illinois Municipal Retirement Fund20,998$1.84M0.02%-1,20713F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…20,899$1.83M<0.01%+7,39913F-HRTimeline
ALPS ADVISORS INCin group ALPS ADVISORS INC20,707$1.82M0.01%-98813F-HRTimelineGroup
State of Alaska, Department of Revenue20,684$1.81M0.02%-65413F-HRTimeline
PDT Partners, LLC20,600$1.81M0.11%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…20,107$1.76M<0.01%+7,93213F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.19,472$1.71M<0.01%-15,01013F-HRTimelineGroup
Louisiana State Employees Retirement Sy…18,600$1.63M0.03%-60013F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…18,095$1.59M<0.01%+19813F-HRTimelineGroup
Quantbot Technologies LP18,079$1.59M0.06%+10,08113F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …17,908$1.57M<0.01%-56113F-HRTimelineGroup
Cetera Investment Advisers17,884$1.57M<0.01%+1,30113F-HRTimeline
Elo Mutual Pension Insurance Co17,067$1.5M0.02%-6,03913F-HRTimeline
Focus Financial Network, Inc.16,945$1.49M0.05%+1,23213F-HRTimeline
NewEdge Advisors, LLC16,313$1.43M0.01%+8213F-HR/ATimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…15,833$1.4M<0.01%-1,73113F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson15,542$1.36M<0.01%013F-HR/ATimelineGroup
Bridgewater Associates, LP15,201$1.33M0.01%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…15,010$1.32M<0.01%+2,82913F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD14,751$1.29M<0.01%-7,65013F-HRTimeline
Quantinno Capital Management LP14,748$1.29M<0.01%+4,27813F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd14,621$1.28M0.05%+6713F-HRTimelineGroup
North Star Investment Management Corp.14,236$1.25M0.08%013F-HRTimeline
CAPITAL FUND MANAGEMENT S.A.14,022$1.23M0.01%-1,35113F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC12,673$1.11M0.01%-2,10613F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…12,505$1.1M<0.01%-1,48113F-HRTimeline
NATIXIS ADVISORS, LLCin group Natixis Investment Managers12,158$1.07M<0.01%+64613F-HRTimelineGroup
Engineers Gate Manager LP11,967$1.05M0.01%+5,25113F-HRTimeline
AMALGAMATED BANK11,956$1.05M0.01%-11413F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…11,693$1.03M0.01%new13F-HRTimelineGroup
O'SHAUGHNESSY ASSET MANAGEMENT, LLC11,596$1.02M0.01%+1,16113F-HRTimeline
CAPSTONE INVESTMENT ADVISORS, LLCin group CAPSTONE INVESTMENT ADVISORS,…11,141$978K0.01%-11,80813F-HRTimelineGroup
YOUSIF CAPITAL MANAGEMENT, LLC11,135$977K0.01%-12313F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO11,047$970K<0.01%+5,12313F-HRTimelineGroup
DARK FOREST CAPITAL MANAGEMENT LP10,950$961K0.09%-14,14013F-HRTimeline
Police & Firemen's Retirement System of…10,636$934K0.01%013F-HRTimeline
JAMES INVESTMENT RESEARCH, INC.10,631$933K0.1%+1313F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth10,602$931K<0.01%+41613F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…10,544$925K0.01%013F-HRTimeline
EAGLE GLOBAL ADVISORS LLC10,480$920K0.03%013F-HRTimeline
Atom Investors LP10,412$914K0.07%013F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…10,363$910K<0.01%-1213F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM10,359$909K0.01%-17113F-HRTimeline
GREAT VALLEY ADVISOR GROUP, INC.in group GREAT VALLEY ADVISOR GROUP, I…10,201$896K0.02%013F-HRTimelineGroup
HighTower Advisors, LLC10,104$887K<0.01%+26313F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC9,875$867K0.01%-8,18913F-HRTimeline
VISTA INVESTMENT PARTNERS LLC9,787$859K0.23%013F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND9,592$842K0.01%013F-HRTimeline
State of Tennessee, Department of Treas…9,490$833K<0.01%013F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC9,123$801K<0.01%-19713F-HRTimelineGroup
Voleon Capital Management LP9,034$793K0.02%-6,31013F-HRTimeline
ALERUS FINANCIAL NA9,028$792K0.04%013F-HRTimeline
Kestra Advisory Services, LLCin group Kestra Advisory Services, LLC9,001$790K<0.01%+57813F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCgroup of 2 filers holding8,927$784K+1,976Timeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/8,780$771K<0.01%+34913F-HRTimelineGroup
CWM, LLCin group CWM, LLC8,407$738K<0.01%-3613F-HRTimelineGroup
Curi Capital, LLC8,352$733K0.01%+213F-HRTimeline
NorthRock Partners, LLC8,224$722K0.01%-1313F-HRTimeline
Amundiin group Amundi8,217$721K<0.01%+2,63113F-HRTimelineGroup
FMR LLCin group FMR LLC7,965$699K<0.01%+13013F-HRTimelineGroup
Cambridge Investment Research Advisors,…7,758$681K<0.01%-18413F-HRTimeline
FOSTER & MOTLEY INC7,750$680K0.04%-33513F-HRTimeline
Private Advisor Group, LLC7,739$679K<0.01%+3,00913F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …7,497$661K<0.01%-3,62913F-HRTimelineGroup
Bluespring Wealth Management, LLC7,459$655K0.06%013F-HRTimeline
MML INVESTORS SERVICES, LLC7,155$628K<0.01%-1,17613F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…7,080$621K<0.01%+61413F-HRTimelineGroup
Creative Planningin group Creative Planning7,021$616K<0.01%+97313F-HRTimelineGroup
VIRTUS ADVISERS, LLCin group Virtus Investment Advisers, L…6,854$602K0.28%013F-HRTimelineGroup
INFRASTRUCTURE CAPITAL ADVISORS, LLC6,794$596K0.06%+91013F-HRTimeline
D.A. DAVIDSON & CO.6,767$594K<0.01%+89813F-HRTimeline
Johnson Wealth Management, LLC6,727$590K0.29%013F-HRTimeline
VIRGINIA RETIREMENT SYSTEMS ET Al6,654$584K<0.01%-13,80013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC6,610$580K<0.01%-6,68813F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP6,719$578K<0.01%+8213F-HRTimelineGroup
Sterling Capital Management LLC6,332$556K0.01%-3,82213F-HRTimeline
Maryland State Retirement & Pension Sys…6,110$536K0.01%013F-HRTimeline
Janney Montgomery Scott LLC6,049$531K<0.01%+1,92013F-HRTimeline
RBA Wealth Management, LLC6,042$530K0.19%-13213F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC5,983$525K0.01%+12713F-HRTimeline
CIBC Bancorp USA Inc.in group CIBC Bancorp USA Inc.5,935$521K<0.01%13F-HRTimelineGroup
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC5,799$509K<0.01%+1,96513F-HRTimelineGroup
GREENWOOD CAPITAL ASSOCIATES LLC5,568$489K0.05%+1,44813F-HRTimeline
Fieldview Capital Management, LLC5,505$483K0.14%new13F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC5,494$482K<0.01%+27613F-HRTimelineGroup
Lido Advisors, LLCin group Lido Advisors, LLC5,416$475K<0.01%+67913F-HRTimelineGroup
Bravera Wealth5,399$474K0.21%+60013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…5,388$473K<0.01%-513F-HRTimelineGroup
Opus Capital Group, LLC5,266$462K0.05%013F-HRTimeline
New Age Alpha Advisors, LLC5,246$460K0.02%-7613F-HRTimeline
Modern Wealth Management, LLC5,178$457K0.01%+1513F-HRTimeline
BAYBAN5,201$456K0.4%+53213F-HRTimeline
Hennion & Walsh Asset Management, Inc.5,112$449K0.02%new13F-HRTimeline
Empirical Financial Services, LLC d.b.a…5,025$441K0.01%+97013F-HRTimeline
Hendershot Investments Inc.5,000$439K0.06%013F-HRTimeline
Holocene Advisors, LP4,981$437K<0.01%new13F-HRTimeline
Gotham Asset Management, LLC4,914$431K<0.01%-1,77513F-HRTimeline
Valtinson Bruner Financial Planning LLC4,817$423K0.12%013F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…4,796$421K<0.01%+613F-HRTimelineGroup
EVOLVE PRIVATE WEALTH, LLC4,772$419K0.02%+17513F-HRTimeline
Alternative Investment Advisors, LLC.4,768$419K0.19%+3113F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC4,714$414K<0.01%-7,84613F-HRTimeline
HARBOUR INVESTMENTS, INC.4,610$405K0.01%+30813F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…4,608$404K<0.01%013F-HRTimeline
QUADRANT CAPITAL GROUP LLC4,576$402K0.01%+3813F-HR/ATimeline
Accredited Investors Inc.4,407$387K0.02%+2813F-HRTimeline
Wealth Forward, LLC4,238$372K0.21%013F-HRTimeline
Independent Advisor Alliance4,236$372K<0.01%013F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV4,228$371K<0.01%+70713F-HRTimeline
BOKF, NAin group BOKF, NA4,206$369K0.01%-2,06113F-HRTimelineGroup
Bell Bank4,086$359K0.02%013F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…4,056$356K<0.01%+21213F-HRTimelineGroup