윌리엄스 컴퍼니즈, Inc.
MX ˙ BMV ˙ US9694571004
SecurityMX:WMB / The Williams Companies, Inc.
InstitutionHennessy Advisors Inc
Latest Disclosed Ownership450,282 shares
Latest Disclosed Value $ 32,771,524
Hennessy Advisors Inc reports 8.60% decrease in ownership of WMB / The Williams Companies, Inc.

On April 21, 2026 - Hennessy Advisors Inc filed a 13F-HR form disclosing ownership of 450,282 shares of The Williams Companies, Inc. (MX:WMB) valued at $32,771,524 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 492,632 shares of The Williams Companies, Inc.. This represents a change in shares of -8.60% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-21 2026-03-31 13F Williams Cos COM 969457100 450,282 -42,350 -8.60 32,772 10.67 1.1835
2026-01-27 2025-12-31 13F Williams Cos COM 969457100 492,632 -34,600 -6.56 29,612 -11.34 1.0494
2025-10-20 2025-09-30 13F Williams Cos COM 969457100 527,232 436,000 477.90 33,400 482.90 1.1530
2025-07-21 2025-06-30 13F Williams Cos COM 969457100 91,232 0 0.00 5,730 5.10 0.1911
2025-04-16 2025-03-31 13F Williams Cos COM 969457100 91,232 1,580 1.76 5,452 12.39 0.1815
2025-01-15 2024-12-31 13F Williams Cos COM 969457100 89,652 0 0.00 4,852 18.55 0.1444
2024-10-16 2024-09-30 13F Williams Cos COM 969457100 89,652 0 0.00 4,093 7.40 0.1311
2024-07-23 2024-06-30 13F Williams Cos COM 969457100 89,652 -2,300 -2.50 3,810 6.34 0.1442
2024-04-16 2024-03-31 13F Williams Cos COM 969457100 91,952 0 0.00 3,583 11.90 0.1509
2024-01-18 2023-12-31 13F WILLIAMS COS COM 969457100 91,952 0 0.00 3,203 3.39 0.2383
2023-10-18 2023-09-30 13F WILLIAMS COS COM 969457100 91,952 -14,500 -13.62 3,098 -10.83 0.2171
2023-07-17 2023-06-30 13F WILLIAMS COS COM 969457100 106,452 0 0.00 3,474 9.28 0.2504
2023-04-14 2023-03-31 13F WILLIAMS COS COM 969457100 106,452 0 0.00 3,179 105,833.33 0.2341
2023-01-20 2022-12-31 13F WILLIAMS COS COM 969457100 106,452 0 0.00 4 -99.90 0.2301
2022-11-08 2022-09-30 13F WILLIAMS COS COM 969457100 106,452 -4,200 -3.80 3,048 -11.73 0.2106
2022-08-12 2022-06-30 13F WILLIAMS COS COM 969457100 110,652 0 0.00 3,453 -6.60 0.2067
2022-05-12 2022-03-31 13F WILLIAMS COS COM 969457100 110,652 110,652 3,697 0.1938
2016-08-04 2016-06-30 13F WILLIAMS COS INC DEL COM 969457100 0 -2,907,557 -100.00 0 -100.00
2016-04-21 2016-03-31 13F WILLIAMS COS INC DEL COM 969457100 2,907,557 222,500 8.29 46,724 -32.29 1.4191
2016-01-22 2015-12-31 13F WILLIAMS COS INC DEL COM 969457100 2,685,057 740,000 38.05 69,006 -3.72 2.1588
2015-10-20 2015-09-30 13F WILLIAMS COS INC DEL COM 969457100 1,945,057 249,000 14.68 71,675 -26.36 2.1561
2015-08-04 2015-06-30 13F WILLIAMS COS INC DEL COM 969457100 1,696,057 -472,500 -21.79 97,337 -11.28 2.9155
2015-04-21 2015-03-31 13F WILLIAMS COS INC DEL COM 969457100 2,168,557 -344,000 -13.69 109,707 -2.84 3.1578
2015-01-22 2014-12-31 13F WILLIAMS COS INC DEL COM 969457100 2,512,557 1,168,732 86.97 112,914 131.09 3.1968
2013-10-30 2013-09-30 13F WILLIAMS COS INC DEL COM 969457100 1,343,825 -168,704 -11.15 48,861 -0.51 2.2105
2013-07-17 2013-06-30 13F WILLIAMS COS INC DEL COM 969457100 1,512,529 1,512,529 49,112 2.4587
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.