Stock Ownership/ALLIANT ENERGY CORP

ALLIANT ENERGY CORP: Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in ALLIANT ENERGY CORP. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
9
13F filers
Aggregate Value
$194.5M
Across holders
Last Price
—
EOD close
Sector
—
GICS
Institutional Holders of ALLIANT ENERGY CORP
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9 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
Magnetar Financial LLC
CIK 0001352851
Hedge Fund43.48M$47.6M24.5%0.4%New—Q2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund40.00M$43.8M22.5%0.0%New—Q2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund29.37M$32.3M16.6%0.0%New—Q2 2026
CAPSTONE INVESTMENT ADVISORS, LLC
CIK 0001426196
Hedge Fund27.50M$30.3M15.6%0.1%New—Q2 2026
Man Group plc
CIK 0001637460
Hedge Fund20.29M$22.2M11.4%0.0%New—Q2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund8.76M$9.6M4.9%0.0%New—Q2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund5.00M$5.5M2.8%0.0%New—Q2 2026
Verition Fund Management LLC
CIK 0001454027
Hedge Fund2.50M$2.8M1.4%0.0%New—Q2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund500K$547K0.3%0.0%New—Q2 2026
Magnetar Financial LLCNew
Hedge Fund
$47.6M· 24.5% of total· 0.4% port· 43.48M sh· — QoQ· Q2 2026
CITADEL ADVISORS LLCNew
Hedge Fund
$43.8M· 22.5% of total· 0.0% port· 40.00M sh· — QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPNew
Hedge Fund
$32.3M· 16.6% of total· 0.0% port· 29.37M sh· — QoQ· Q2 2026
CAPSTONE INVESTMENT ADVISORS, LLCNew
Hedge Fund
$30.3M· 15.6% of total· 0.1% port· 27.50M sh· — QoQ· Q2 2026
Man Group plcNew
Hedge Fund
$22.2M· 11.4% of total· 0.0% port· 20.29M sh· — QoQ· Q2 2026
SHAW D E & CO INCNew
Hedge Fund
$9.6M· 4.9% of total· 0.0% port· 8.76M sh· — QoQ· Q2 2026
MARSHALL WACE, LLPNew
Hedge Fund
$5.5M· 2.8% of total· 0.0% port· 5.00M sh· — QoQ· Q2 2026
Verition Fund Management LLCNew
Hedge Fund
$2.8M· 1.4% of total· 0.0% port· 2.50M sh· — QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCNew
Hedge Fund
$547K· 0.3% of total· 0.0% port· 500K sh· — QoQ· Q2 2026
← Stock ownership