# ALLIANT ENERGY CORP (LNT) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 018802108
Page URL: https://superinvestorclub.com/stock/LNT
Last updated: 2026-08-29T13:48:16.314Z

## Summary

As of the most recent 13F filing period, ALLIANT ENERGY CORP (LNT) is held by 1 tracked superinvestors with an aggregate position value of $202.8M representing 02657913 shares.

## Top institutional holders (1)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Mairs & Power](https://superinvestorclub.com/manager/92) | Mairs & Power | 2657913 | $202.8M | 1.86% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2024-09-30: 1 holders, $248.5M aggregate, 04095219 shares
- 2024-12-31: 1 holders, $231.5M aggregate, 03913967 shares
- 2025-03-31: 1 holders, $195.9M aggregate, 03044638 shares
- 2025-06-30: 1 holders, $184.0M aggregate, 03042142 shares
- 2025-09-30: 1 holders, $201.8M aggregate, 02993643 shares
- 2025-12-31: 1 holders, $192.2M aggregate, 02956947 shares
- 2026-03-31: 1 holders, $207.3M aggregate, 02889060 shares
- 2026-06-30: 1 holders, $202.8M aggregate, 02657913 shares

## Recent congressional trades (2)

- 2025-08-13: Lisa McClain (Republican-MI) sale $1,001 - $15,000
- 2025-08-04: Lisa McClain (Republican-MI) purchase $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "ALLIANT ENERGY CORP (LNT) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/LNT), aggregating SEC 13F, Form 4, and congressional disclosures."