Alliant Energy Corp
LNT- Exchange
- Nasdaq
- Industry
- Electric & Other Services Combined
- SEC CIK
- 0000352541
No open-market purchases or sales by Alliant Energy Corp insiders were filed in the last 90 days; 886 institutions reported holding it in 13F filings for Q2 2026, worth $19.3B in total; no superinvestor holds it.
Key figures
- Market capClose on Nov 10, 2026
- $18.9B
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +30 vs. previous quarter
- 886
- 13F valueReported value at the end of Q2 2026
- $19.3B
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $4.36B
- +9.6% year over year
- Net income, FY2025
- $810.0M
- +17.4% year over year
- Free cash flow, FY2025
- –
- No comparable prior period
- Revenue, Q1 FY2026
- $1.18B
- +5.0% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 28.5M
- Shares sold short
- Change
- +1.13M
- +4.1% vs. previous
- Days to cover
- 9.31
- At average daily volume
Superinvestors holding LNT, Q2 2026
Go to the superinvestors tabNo superinvestor reported holding LNT at the end of Q2 2026.
Latest insider trades
See all insider tradesOpen-market purchases and sales by Alliant Energy Corp insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 12, 2026 (view filing)4:16 PM ET | Aug 10 | 2 days | Durian Robert JEVP and CFO | SSale | −0.1 | $68.56 | −$6.65 | 0.0%158.1K after | |
| Feb 20, 2024 (view filing) | Feb 20 | Same day | Barton Lisa MPresident and CEO | PPurchase | +1.10K | $48.56 | +$53.4K | +3.1%36.4K after | |
| Feb 20, 2024 (view filing) | Feb 20 | Same day | Sundararajan RajaExecutive Vice President | PPurchase | +500 | $48.26 | +$24.1K | +5.0%10.6K after | |
| Jun 13, 2022 (view filing) | Jun 9 | 4 days | Falotico Nancy JoyDirector | PPurchase | +1.20K | $61.00 | +$73.2K | +12,000.0%1.21K after | |
| Mar 1, 2022 (view filing) | Feb 28 | 1 day | Gallegos James HEVP, Gen Cnsl and Corp Sec | SSale | −10.0K | $58.04 | −$580.4K | −14.8%57.4K after |
Top 10 13F holders, Q2 2026
See all 886 holdersThe largest institutional positions in Alliant Energy Corp at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 24,986,672 | $1.91B | 0.03% | +487,232+2.0% | Added |
| State Street Corp | 17,571,998 | $1.34B | 0.04% | +561,347+3.3% | Added |
| Vanguard Capital Management LLC | 16,861,714 | $1.29B | 0.03% | +162,252+1.0% | Added |
| Vanguard Portfolio Management LLC | 14,386,177 | $1.10B | 0.05% | −208,829−1.4% | Reduced |
| Price T Rowe Associates Inc | 11,515,298 | $878.5M | 0.09% | +904,652+8.5% | Added |
| Jupiter Topco LLC | 10,977,426 | $837.5M | 0.34% | +10,977,426 | New |
| Nuveen, LLC | 7,890,946 | $602.0M | 0.14% | +450,560+6.1% | Added |
| Geode Capital Management, LLC | 7,407,445 | $563.0M | 0.03% | +149,419+2.1% | Added |
| Massachusetts Financial Services Co | 6,936,512 | $533.8M | 0.17% | −110,725−1.6% | Reduced |
| Victory Capital Management Inc | 6,442,409 | $491.5M | 0.28% | −796,455−11.0% | Reduced |
Holders of 5% or more of LNT
See all 2 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of Alliant Energy Corp.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 13G | 7.54%19.4M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G | 5.68%14.6M shares | New | Apr 28, 20261 filing | Apr 28, 2026 | SEC |
Politician trades
All politician trades in LNT3 members of Congress reported 10 trades in Alliant Energy Corp since 2020. Newest filings:
| Filed | Politician | Type | Amount |
|---|---|---|---|
| Sep 12, 2025 |  Lisa C. McClain House · MI | Sell | $1K-$15K |
| Sep 12, 2025 | Lisa C. McClain House · MI | Buy | $1K-$15K |
| Oct 10, 2023 |  Lois Frankel House · FL | Sell | $1K-$15K |
| Mar 13, 2023 | Lois Frankel House · FL | Buy | $1K-$15K |
| Mar 26, 2021 | Lois Frankel House · FL | Buy | $1K-$15K |
House · MI · Sep 12, 2025
Sell$1K-$15K
House · MI · Sep 12, 2025
Buy$1K-$15K
House · FL · Oct 10, 2023
Sell$1K-$15K
House · FL · Mar 13, 2023
Buy$1K-$15K
House · FL · Mar 26, 2021
Buy$1K-$15K