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 ($68.2m this quarter). Holder counts are more reliable. Shares outstanding: 256.5m as of 2024-06-30, 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 ≈ $50.90. Options: 9 managers hold calls ($5.6m notional), 7 hold puts ($6.4m).
Trends to Q2 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 627 |
| Q4 2022 | 661 |
| Q1 2023 | 637 |
| Q2 2023 | 635 |
| Q3 2023 | 615 |
| Q4 2023 | 653 |
| Q1 2024 | 630 |
| Q2 2024 | 659 |
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 |
| Q3 2023 | 272 | 289 |
| Q4 2023 | 287 | 280 |
| Q1 2024 | 298 | 315 |
| Q2 2024 | 310 | 267 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $7.1m | $53.2m | 7.44 |
| Q4 2023 | $4.1m | $13.8m | 3.40 |
| Q1 2024 | $5.0m | $11.1m | 2.22 |
| Q2 2024 | $5.6m | $6.4m | 1.13 |
Biggest buyers
| Point72 Asset Management, L.P. | New | +832.4k |
| COHEN & STEERS, INC. | Added | +696.9k |
| CITADEL ADVISORS LLC | New | +681.6k |
| VICTORY CAPITAL MANAGEMENT INC | Added | +633.6k |
| Verition Fund Management LLC | Added | +532.6k |
| MAIRS & POWER INC | Added | +510.0k |
| VANGUARD GROUP INC | Added | +380.3k |
| BANK OF AMERICA CORP /DE/ | Added | +353.8k |
| Pictet Asset Management Holding SA | Added | +296.8k |
| Greenland Capital Management LP | New | +295.9k |
Biggest sellers
| MORGAN STANLEY | Reduced | -5.9m |
| ExodusPoint Capital Management, LP | Reduced | -954.3k |
| Mitsubishi UFJ Trust & Banking Corp | Reduced | -862.1k |
| D. E. Shaw & Co., Inc. | Reduced | -803.3k |
| Magellan Asset Management Ltd | Reduced | -764.2k |
| Energy Income Partners, LLC | Reduced | -653.5k |
| STATE STREET CORP | Reduced | -551.5k |
| GOLDMAN SACHS GROUP INC | Reduced | -405.8k |
| California Public Employees Retirement System | Reduced | -294.9k |
| Nuveen Asset Management, LLC | Reduced | -220.7k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $4.1m81.0k shares |
| SIMPLEX TRADING, LLC | Added | $539.0k10.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $325.8k6.4k shares |
| Walleye Trading LLC | Added | $290.1k5.7k shares |
| JANE STREET GROUP, LLC | Added | $254.5k5.0k shares |
| GROUP ONE TRADING LLC | Added | $61.1k1.2k shares |
| CAPSTONE INVESTMENT ADVISORS, LLC | New | $35.6k700 shares |
| Walleye Capital LLC | New | $5.1k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SIMPLEX TRADING, LLC | Reduced | $2.3m45.5k shares |
| CITADEL ADVISORS LLC | Reduced | $2.0m39.6k shares |
| Walleye Capital LLC | Added | $880.6k17.3k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $855.1k16.8k shares |
| Walleye Trading LLC | Added | $193.4k3.8k shares |
| CAPSTONE INVESTMENT ADVISORS, LLC | Added | $127.2k2.5k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 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 2024
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 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 2 | $77.5k | 0 | — | — |
| Q2 2024 | 0 | — | 0 | — | — |
None reported in Q2 2024.
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.03% of their portfolio | 32.2m $1.6bn | Added +380.3k |
| BlackRock Inc. 0.03% of their portfolio | 23.5m $1.2bn | Reduced -40.6k |
| STATE STREET CORP 0.04% of their portfolio | 16.1m $819.7m | Reduced -551.5k |
| VICTORY CAPITAL MANAGEMENT INC 0.56% of their portfolio | 11.0m $557.7m | Added +633.6k |
| JANUS HENDERSON GROUP PLC 0.29% of their portfolio | 10.6m $540.9m | Added +46.6k |
| Nuveen Asset Management, LLC 0.10% of their portfolio | 6.7m $341.8m | Reduced -220.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.03% of their portfolio | 6.5m $330.1m | Added +186.7k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.09% of their portfolio | 6.0m $305.4m | Reduced -67.7k |
| Invesco Ltd. 0.05% of their portfolio | 4.5m $227.0m | Reduced -197.3k |
| Pictet Asset Management Holding SA 0.23% of their portfolio | 3.9m $200.8m | Added +296.8k |
| MAIRS & POWER INC 1.88% of their portfolio | 3.8m $195.0m | Added +510.0k |
| FRANKLIN RESOURCES INC 0.06% of their portfolio | 3.7m $188.2m | Reduced -14.7k |
| MORGAN STANLEY 0.01% of their portfolio | 2.9m $146.3m | Reduced -5.9m |
| Mitsubishi UFJ Trust & Banking Corp 0.31% of their portfolio | 2.5m $129.2m | Reduced -862.1k |
| Thrivent Financial for Lutherans 0.26% of their portfolio | 2.5m $128.0m | Added +60.2k |
| NORTHERN TRUST CORP 0.02% of their portfolio | 2.4m $120.4m | Added +76.3k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 2.3m $115.8m | Added +353.8k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 2.2m $112.1m | Added +39.9k |
| Legal & General Group Plc 0.03% of their portfolio | 2.2m $112.0m | Reduced -91.5k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 2.1m $105.2m | Reduced -18.3k |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO 1.32% of their portfolio | 2.0m $103.3m | Unchanged |
| COHEN & STEERS, INC. 0.20% of their portfolio | 1.9m $97.3m | Added +696.9k |
| JOHNSON INVESTMENT COUNSEL INC 0.94% of their portfolio | 1.8m $89.4m | Added +29.4k |
| Magellan Asset Management Ltd 0.85% of their portfolio | 1.7m $89.0m | Reduced -764.2k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.6m $80.2m | Reduced -41.2k |
| REAVES W H & CO INC 2.69% of their portfolio | 1.6m $79.7m | Reduced -50.4k |
| FIRST TRUST ADVISORS LP 0.08% of their portfolio | 1.5m $76.0m | Reduced -73.1k |
| Energy Income Partners, LLC 1.51% of their portfolio | 1.3m $67.7m | Reduced -653.5k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.3m $67.3m | Reduced -405.8k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 1.3m $65.9m | Added +116.4k |
| California Public Employees Retirement System 0.04% of their portfolio | 1.2m $61.2m | Reduced -294.9k |
| FMR LLC 0.00% of their portfolio | 1.1m $55.7m | Added +66.5k |
| PRINCIPAL FINANCIAL GROUP INC 0.03% of their portfolio | 1.1m $55.1m | Reduced -4.5k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 1.0m $51.7m | Added +26.4k |
| Artisan Partners Limited Partnership 0.08% of their portfolio | 1.0m $51.5m | Reduced -7.1k |
| ANCHOR CAPITAL ADVISORS LLC 1.38% of their portfolio | 964.3k $49.1m | Added +54.5k |
| Point72 Asset Management, L.P. 0.14% of their portfolio | 832.4k $42.4m | New |
| Swiss National Bank 0.03% of their portfolio | 759.1k $38.6m | Reduced -5.2k |
| VAUGHAN DAVID INVESTMENTS LLC/IL 0.97% of their portfolio | 755.7k $38.5m | Added +13.8k |
| CITADEL ADVISORS LLC 0.03% of their portfolio | 681.6k $34.7m | New |
| NEUBERGER BERMAN GROUP LLC 0.03% of their portfolio | 681.4k $34.7m | Added +25.8k |
| REGIONS FINANCIAL CORP 0.25% of their portfolio | 653.1k $33.2m | Reduced -11.7k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 641.0k $32.6m | Added +33.2k |
| BI Asset Management Fondsmaeglerselskab A/S 0.51% of their portfolio | 616.2k $31.4m | Added +39.1k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 601.2k $30.6m | Reduced -54.6k |
| Sumitomo Mitsui Trust Group, Inc. 0.02% of their portfolio | 574.0k $29.2m | Reduced -58.0k |
| UBS Group AG 0.01% of their portfolio | 565.1k $28.8m | Added +172.7k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.03% of their portfolio | 552.8k $28.1m | Added +16.6k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 549.8k $28.0m | Reduced -18.2k |
| Verition Fund Management LLC 0.21% of their portfolio | 544.2k $27.7m | Added +532.6k |
| RHUMBLINE ADVISERS 0.03% of their portfolio | 540.5k $27.5m | Added +34.7k |
| LIBERTY ONE INVESTMENT MANAGEMENT, LLC 3.08% of their portfolio | 536.3k $27.3m | Added +50.7k |
| Eagle Ridge Investment Management 2.48% of their portfolio | 526.6k $26.8m | Not comparable |
| WESTWOOD HOLDINGS GROUP INC 0.12% of their portfolio | 516.0k $26.3m | Added +6.2k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.17% of their portfolio | 513.9k $26.2m | Added +2.6k |
| BNP PARIBAS FINANCIAL MARKETS 0.03% of their portfolio | 485.1k $24.7m | Reduced -14.0k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 467.7k $23.8m | Added +9.0k |
| LPL Financial LLC 0.01% of their portfolio | 453.3k $23.1m | Added +99.9k |
| BARCLAYS PLC 0.01% of their portfolio | 446.9k $22.7m | Reduced -128.5k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 430.2k $21.9m | Reduced -69.2k |
| RENAISSANCE TECHNOLOGIES LLC 0.04% of their portfolio | 412.9k $21.0m | Added +116.1k |
| HSBC HOLDINGS PLC 0.01% of their portfolio | 392.6k $19.9m | Reduced -72.3k |
| Russell Investments Group, Ltd. 0.03% of their portfolio | 375.1k $19.1m | Reduced -34.2k |
| GODSEY & GIBB, INC 1.96% of their portfolio | 372.3k $18.9m | Added +19.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 346.1k $17.6m | Added +6.7k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.02% of their portfolio | 338.7k $17.2m | Reduced -4.5k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.02% of their portfolio | 337.9k $17.2m | Reduced -4.6k |
| Bahl & Gaynor LLC 0.09% of their portfolio | 327.2k $16.7m | Added +1.3k |
| ExodusPoint Capital Management, LP 0.17% of their portfolio | 312.4k $15.9m | Reduced -954.3k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.03% of their portfolio | 308.5k $15.7m | Added +2.2k |
| GABELLI FUNDS LLC 0.11% of their portfolio | 296.6k $15.1m | Added +46.3k |
| Greenland Capital Management LP 3.21% of their portfolio | 295.9k $15.1m | New |
| GATEWAY INVESTMENT ADVISERS LLC 0.17% of their portfolio | 295.3k $15.0m | Reduced -62.2k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 288.0k $14.7m | Reduced -17.5k |
| Epoch Investment Partners, Inc. 0.07% of their portfolio | 279.8k $14.2m | Reduced -7.3k |
| HITE Hedge Asset Management LLC 1.37% of their portfolio | 274.1k $14.0m | Reduced -201.1k |
| RAYMOND JAMES & ASSOCIATES 0.01% of their portfolio | 251.6k $12.8m | Added +27.6k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 246.6k $12.6m | Added +8.1k |
| CIBC Private Wealth Group LLC 0.02% of their portfolio | 236.1k $12.1m | Added +219.2k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.01% of their portfolio | 229.6k $11.7m | Reduced -5.4k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 227.4k $11.6m | Added +73.2k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 222.1k $11.3m | Added +131.0k |
| CITIGROUP INC 0.01% of their portfolio | 222.0k $11.3m | Added +27.8k |
| AE Wealth Management LLC 0.11% of their portfolio | 216.6k $11.0m | Added +4.8k |
| MACQUARIE GROUP LTD 0.01% of their portfolio | 207.0k $10.5m | Reduced -4.5k |
| NISA INVESTMENT ADVISORS, LLC 0.06% of their portfolio | 201.8k $10.3m | Added +3.6k |
| Covalis Capital LLP 1.40% of their portfolio | 201.5k $10.3m | New |
| Amundi 0.00% of their portfolio | 186.0k $9.5m | Reduced -128.6k |
| Crestline Management, L.P. 0.74% of their portfolio | 185.2k $9.4m | Added +44.3k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 180.4k $9.2m | Added +172.4k |
| Allspring Global Investments Holdings, LLC 0.01% of their portfolio | 178.9k $9.1m | Reduced -373 |
| NATIXIS ADVISORS, LLC 0.02% of their portfolio | 171.2k $8.7m | Added +14.9k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.02% of their portfolio | 167.9k $8.5m | Added +29 |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 166.4k $8.5m | Added +66.6k |
| Holocene Advisors, LP 0.04% of their portfolio | 165.9k $8.4m | Reduced -46.7k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.03% of their portfolio | 160.9k $8.2m | Reduced -140.5k |
| DEAN INVESTMENT ASSOCIATES, LLC 1.16% of their portfolio | 160.8k $8.2m | Reduced -7.6k |
| PRUDENTIAL FINANCIAL INC 0.01% of their portfolio | 158.7k $8.1m | Reduced -17.6k |
| STEPHENS INC /AR/ 0.12% of their portfolio | 157.2k $8.0m | Added +10.4k |
| Asset Management One Co., Ltd. 0.03% of their portfolio | 155.4k $7.9m | Reduced -10.1k |