ALLIANT ENERGY CORP LNT
COM · Common Stock · CUSIP 018802108 · ISIN US0188021085
Public utility holding company based in Madison,WI, US
- SectorUtilities
- IndustryElectric & Other Services Combined
- HeadquartersMadison, WI
- Founded1981
- Websitealliantenergy.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($91.1m this quarter). Holder counts are more reliable. Shares outstanding: 252.7m as of 2023-06-30, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $52.47. Options: 9 managers hold calls ($16.5m notional), 11 hold puts ($60.4m).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 627 |
| Q4 2022 | 661 |
| Q1 2023 | 637 |
| Q2 2023 | 635 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 305 | 255 |
| Q1 2023 | 309 | 263 |
| Q2 2023 | 270 | 270 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $35.7m | $6.2m | 0.17 |
| Q4 2022 | $24.8m | $10.9m | 0.44 |
| Q1 2023 | $30.5m | $54.0m | 1.77 |
| Q2 2023 | $16.5m | $60.4m | 3.65 |
Biggest buyers
| JANUS HENDERSON GROUP PLC | Added | +2.2m |
| MAIRS & POWER INC | Added | +1.6m |
| Mitsubishi UFJ Trust & Banking Corp | Added | +1.5m |
| MILLENNIUM MANAGEMENT LLC | Added | +734.2k |
| CITIGROUP INC | Added | +472.4k |
| Energy Income Partners, LLC | Added | +463.7k |
| UBS Group AG | Added | +346.9k |
| LMR Partners LLP | Added | +290.0k |
| Lighthouse Investment Partners, LLC | Added | +225.1k |
| Nuveen Asset Management, LLC | Added | +199.2k |
Biggest sellers
| FMR LLC | Reduced | -1.4m |
| JENNISON ASSOCIATES LLC | Sold out | -601.3k |
| BlackRock Inc. | Reduced | -508.7k |
| MONEY CONCEPTS CAPITAL CORP | Reduced | -486.6k |
| CIBC Private Wealth Group LLC | Reduced | -400.9k |
| Balyasny Asset Management L.P. | Reduced | -400.1k |
| Man Group plc | Sold out | -396.1k |
| HITE Hedge Asset Management LLC | Reduced | -391.8k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -341.6k |
| VANGUARD GROUP INC | Reduced | -313.4k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $7.9m150.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.9m55.3k shares |
| Twin Tree Management, LP | Reduced | $2.2m42.5k shares |
| JANE STREET GROUP, LLC | Added | $1.4m27.5k shares |
| WOLVERINE TRADING, LLC | Added | $896.0k17.3k shares |
| SIMPLEX TRADING, LLC | Reduced | $624.0k11.9k shares |
| Walleye Trading LLC | Reduced | $388.4k7.4k shares |
| GROUP ONE TRADING LLC | Added | $141.7k2.7k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| Portman Square Capital LLP | Added | $36.5m695.3k shares |
| CITADEL ADVISORS LLC | Added | $8.7m165.3k shares |
| SIMPLEX TRADING, LLC | Reduced | $8.2m155.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $4.1m77.9k shares |
| WOLVERINE TRADING, LLC | Reduced | $1.2m23.5k shares |
| Walleye Trading LLC | Reduced | $876.4k16.7k shares |
| JANE STREET GROUP, LLC | Reduced | $771.5k14.7k shares |
| CAPSTONE INVESTMENT ADVISORS, LLC | New | $110.2k2.1k shares |
| GROUP ONE TRADING LLC | Added | $31.5k600 shares |
| Twin Tree Management, LP | Reduced | $5.2k100 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 7.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-28 | 5.7% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q2 2023
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 0 | — | 0 | — | — |
| Q1 2022 | 0 | — | 1 | $580.4k | — |
| Q2 2022 | 1 | $73.2k | 0 | — | — |
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
None reported in Q2 2023.
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.04% of their portfolio | 32.2m $1.7bn | Reduced -313.4k |
| BlackRock Inc. 0.03% of their portfolio | 23.0m $1.2bn | Reduced -508.7k |
| STATE STREET CORP 0.04% of their portfolio | 13.5m $709.0m | Added +109.9k |
| VICTORY CAPITAL MANAGEMENT INC 0.49% of their portfolio | 8.4m $441.4m | Added +164.8k |
| Nuveen Asset Management, LLC 0.12% of their portfolio | 6.7m $349.0m | Added +199.2k |
| JANUS HENDERSON GROUP PLC 0.19% of their portfolio | 5.8m $306.5m | Added +2.2m |
| GEODE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio | 5.8m $301.7m | Added +164.6k |
| Mitsubishi UFJ Trust & Banking Corp 0.65% of their portfolio | 5.4m $281.2m | Added +1.5m |
| PICTET ASSET MANAGEMENT SA 0.26% of their portfolio | 4.2m $219.5m | Reduced -142.2k |
| Invesco Ltd. 0.06% of their portfolio | 4.1m $215.0m | Reduced -173.4k |
| FRANKLIN RESOURCES INC 0.10% of their portfolio | 4.0m $208.8m | Reduced -37.5k |
| COHEN & STEERS, INC. 0.39% of their portfolio | 3.5m $183.7m | Reduced -38.9k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.05% of their portfolio | 2.9m $153.2m | Reduced -31.9k |
| MAIRS & POWER INC 1.55% of their portfolio | 2.7m $142.6m | Added +1.6m |
| MORGAN STANLEY 0.01% of their portfolio | 2.7m $140.0m | Added +78.7k |
| NORTHERN TRUST CORP 0.02% of their portfolio | 2.5m $129.6m | Reduced -170.1k |
| Legal & General Group Plc 0.04% of their portfolio | 2.4m $124.9m | Added +2.1k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 2.2m $116.5m | Reduced -235.8k |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO 1.36% of their portfolio | 2.1m $112.0m | Reduced -114.2k |
| Thrivent Financial for Lutherans 0.25% of their portfolio | 2.1m $110.7m | Added +71.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.03% of their portfolio | 2.0m $105.7m | Added +5.7k |
| REAVES W H & CO INC 3.47% of their portfolio | 1.8m $94.2m | Reduced -264.0k |
| FIRST TRUST ADVISORS LP 0.11% of their portfolio | 1.8m $93.0m | Reduced -10.0k |
| Magellan Asset Management Ltd 0.81% of their portfolio | 1.7m $91.5m | Reduced -70.5k |
| Energy Income Partners, LLC 1.78% of their portfolio | 1.6m $83.7m | Added +463.7k |
| California Public Employees Retirement System 0.07% of their portfolio | 1.6m $83.1m | Reduced -19.8k |
| FMR LLC 0.01% of their portfolio | 1.5m $78.2m | Reduced -1.4m |
| JOHNSON INVESTMENT COUNSEL INC 0.84% of their portfolio | 1.3m $67.8m | Added +38.9k |
| PRINCIPAL FINANCIAL GROUP INC 0.04% of their portfolio | 1.2m $61.5m | Added +59.3k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 1.1m $58.7m | Reduced -64.7k |
| ANCHOR CAPITAL ADVISORS LLC 1.52% of their portfolio | 1.1m $58.5m | Added +131.7k |
| ExodusPoint Capital Management, LP 0.65% of their portfolio | 1.1m $55.8m | Reduced -62.5k |
| Point72 Asset Management, L.P. 0.17% of their portfolio | 932.0k $48.9m | Reduced -189.6k |
| Swiss National Bank 0.03% of their portfolio | 906.9k $47.6m | Reduced -89.4k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 860.5k $45.2m | Added +20.1k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.03% of their portfolio | 855.4k $44.9m | Reduced -9.5k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 828.6k $43.5m | Added +171.8k |
| MILLENNIUM MANAGEMENT LLC 0.05% of their portfolio | 826.3k $43.4m | Added +734.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.02% of their portfolio | 781.3k $41.7m | Unchanged |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. 0.45% of their portfolio | 772.5k $40.5m | Added +161.9k |
| CITIGROUP INC 0.05% of their portfolio | 717.6k $37.7m | Added +472.4k |
| REGIONS FINANCIAL CORP 0.32% of their portfolio | 705.0k $37.0m | Reduced -17.1k |
| VAUGHAN DAVID INVESTMENTS LLC/IL 1.02% of their portfolio | 665.4k $34.9m | Added +12.1k |
| UBS Group AG 0.01% of their portfolio | 656.2k $34.4m | Added +346.9k |
| Russell Investments Group, Ltd. 0.07% of their portfolio | 642.9k $33.7m | Added +119.2k |
| Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio | 637.1k $33.4m | Reduced -100.8k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 621.0k $32.6m | Added +24.1k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 595.6k $31.3m | Reduced -1.4k |
| Lighthouse Investment Partners, LLC 2.36% of their portfolio | 593.2k $31.1m | Added +225.1k |
| FEDERATED HERMES, INC. 0.07% of their portfolio | 555.7k $29.2m | Reduced -7.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 553.1k $29.0m | Reduced -96.3k |
| RHUMBLINE ADVISERS 0.03% of their portfolio | 550.0k $28.9m | Reduced -13.8k |
| LMR Partners LLP 0.66% of their portfolio | 550.0k $28.9m | Added +290.0k |
| NEUBERGER BERMAN GROUP LLC 0.02% of their portfolio | 531.1k $27.9m | Reduced -8.4k |
| Verition Fund Management LLC 0.43% of their portfolio | 523.9k $27.5m | Added +143.5k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 521.0k $27.3m | Added +28.0k |
| LIBERTY ONE INVESTMENT MANAGEMENT, LLC 3.49% of their portfolio | 512.0k $26.9m | Added +21.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 487.2k $25.6m | Reduced -55.0k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.19% of their portfolio | 464.7k $24.4m | Added +39.2k |
| APG Asset Management N.V. 0.04% of their portfolio | 459.4k $22.1m | Reduced -100 |
| CANADA PENSION PLAN INVESTMENT BOARD 0.04% of their portfolio | 451.9k $23.7m | Reduced -54.0k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 451.8k $23.7m | Added +73.9k |
| Yaupon Capital Management LP 3.01% of their portfolio | 424.7k $22.3m | Added +123.8k |
| BARCLAYS PLC 0.01% of their portfolio | 394.2k $20.7m | Added +188.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 388.3k $20.4m | Reduced -23.7k |
| National Pension Service 0.03% of their portfolio | 387.1k $20.0m | Added +7.9k |
| CIBC Private Wealth Group LLC 0.02% of their portfolio | 354.5k $18.6m | Reduced -400.9k |
| GATEWAY INVESTMENT ADVISERS LLC 0.22% of their portfolio | 353.6k $18.6m | Added +12.9k |
| OSAIC HOLDINGS, INC. 0.03% of their portfolio | 348.2k $18.3m | Added +29.1k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 344.8k $18.1m | Reduced -83.5k |
| Amundi 0.01% of their portfolio | 342.5k $18.2m | Added +120.7k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 339.2k $17.8m | Added +4.5k |
| GODSEY & GIBB, INC 1.91% of their portfolio | 320.4k $16.8m | Reduced -3.0k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.04% of their portfolio | 307.4k $16.1m | Reduced -3.2k |
| AE Wealth Management LLC 0.10% of their portfolio | 301.4k $15.8m | Added +10.4k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.03% of their portfolio | 293.2k $15.4m | Reduced -13.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.02% of their portfolio | 279.4k $14.7m | Added +131.0k |
| HITE Hedge Asset Management LLC 1.67% of their portfolio | 275.7k $14.5m | Reduced -391.8k |
| Bahl & Gaynor LLC 0.09% of their portfolio | 272.6k $14.3m | Added +25.4k |
| LPL Financial LLC 0.01% of their portfolio | 271.0k $14.2m | Added +16.7k |
| GABELLI FUNDS LLC 0.10% of their portfolio | 254.2k $13.3m | Unchanged |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.03% of their portfolio | 250.5k $13.1m | Reduced -800 |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 249.1k $13.1m | Added +9.5k |
| Epoch Investment Partners, Inc. 0.07% of their portfolio | 244.3k $12.8m | Reduced -4.0k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.02% of their portfolio | 235.7k $12.4m | Added +7.9k |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.02% of their portfolio | 234.0k $12.3m | Unchanged |
| AQR CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 227.9k $11.9m | Reduced -140.5k |
| PRUDENTIAL FINANCIAL INC 0.02% of their portfolio | 220.7k $11.6m | Reduced -1.2k |
| RAYMOND JAMES & ASSOCIATES 0.01% of their portfolio | 220.2k $11.6m | Added +7.9k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.02% of their portfolio | 220.2k $11.6m | Added +26.8k |
| WEDGE CAPITAL MANAGEMENT L L P/NC 0.18% of their portfolio | 219.2k $11.5m | Reduced -110.1k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 219.0k $11.5m | Reduced -8.1k |
| TORONTO DOMINION BANK 0.01% of their portfolio | 213.8k $11.2m | Added +102.3k |
| NISA INVESTMENT ADVISORS, LLC 0.08% of their portfolio | 211.5k $11.1m | Added +1.8k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 204.2k $10.7m | Reduced -88.7k |
| NATIXIS ADVISORS, LLC 0.03% of their portfolio | 202.4k $10.6m | Added +22.9k |
| CREDIT SUISSE AG/ 0.01% of their portfolio | 194.0k $10.2m | Added +6.5k |
| Allspring Global Investments Holdings, LLC 0.02% of their portfolio | 193.6k $10.2m | Reduced -337 |
| Illinois Municipal Retirement Fund 0.20% of their portfolio | 187.0k $9.8m | Unchanged |
| CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC 0.18% of their portfolio | 186.8k $9.8m | Added +11.1k |