Skip to main content

Calamos Advisors LLC

Position in WMB — Williams Companies, Inc.

CIK 1316507 NAPERVILLE, IL

Position in WMB

as of Jun 30, 2026 · filed Jul 31, 2026
Position Value
$42,146,988
-$90,593 QoQ
Shares Held
566,949
-2.3% QoQ
Ownership
0.046%
of shares outstanding
% of Portfolio
0.24%
of 13F equity value
Holder Rank
#178
of 1,824 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in WMB Over Time

Shares Held

Position Value (USD)

Position in Oil & Gas Midstream

Energy · as of Jun 30, 2026

Calamos Advisors LLC holds $75,323,652 across 6 Oil & Gas Midstream names. WMB ranks #1 (56.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 WMB
Williams Companies, Inc.
This page
566,949 $42,146,988

All Filings in WMB

Export CSV
26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $42,146,988 566,949
2026-03-31 $42,237,581 580,346
2025-12-31 $34,094,932 567,209
2025-09-30 $36,491,310 576,027
2025-06-30 $36,075,865 574,365
2025-03-31 $30,532,160 510,913
2024-12-31 $21,652,437 400,082
2024-09-30 $11,646,638 255,129
2024-06-30 $11,109,032 261,389
2024-03-31 $10,558,103 270,929
2023-12-31 $9,673,788 277,743
2023-09-30 $9,479,388 281,371
2023-06-30 $9,181,135 281,371
2023-03-31 $8,401,738 281,371
2022-12-31 $11,528,587 350,413
2022-09-30 $11,634,659 406,380
2022-06-30 $12,683,119 406,380
2022-03-31 $13,214,289 395,519
2021-12-31 $16,202,192 622,204
2021-09-30 $17,847,809 688,042
2021-06-30 $12,321,669 464,093
2021-03-31 $12,810,604 540,760
2020-12-31 $12,595,109 628,185
2020-09-30 $10,180,900 518,112
2020-06-30 $10,213,549 536,990
2020-03-31 $8,981,882 634,762