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LNT · Alliant Energy Corp · Holdings

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$65.79 +1.50 (+2.34%) At close · Oct 6
Market Cap
$16.43B
Shares
258.28M
Volume · Oct 6 2.74M Avg daily vol (3M) 2.53M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 883
Total Value: $19,341,928,352
Total Shares: 253,540,331
Showing 1–100 of 893 holdings by value · page 1 of 9

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 884 13F filers
Top Holder
9.9%
Sep 2023 → Jun 2026 · range 9.9% – 16.0%
of institutional value
Top 5
33.7%
Sep 2023 → Jun 2026 · range 33.7% – 45.6%
of institutional value
Top 10
49.3%
Sep 2023 → Jun 2026 · range 49.3% – 59.7%
of institutional value
HHI
332
Sep 2023 → Jun 2026 · range 332 – 564
Broadly held
Showing 100 of 893
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 352541 CUSIP 018802108 13F (30d) 20 filings 18 filers Visit website Investor relations