DOSSIER · 13F Holders · Q2 2026Utilities · Natural Gas Transmission
WMB

Williams Cos Inc/The

1,929 institutions still hold Williams Cos Inc/The as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 969457100·Natural Gas Transmission·1,929 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$47.9B
visible holders
Holders
1,929
filers reporting
Concentration
18.03%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

Williams Cos Inc's institutional 13F footprint as of Q2 2026 shows 11 institutions holding $23.79M combined, with two holders — Asset Management Advisors LLC at $12.85M (54%) and MassMutual Private Wealth & Trust at $6.84M (29%) — accounting for 83% of the reported base. During the quarter, those two dominant holders trimmed their positions: AMA reduced by 745 shares and MassMutual by 1,817 shares. Versant Capital cut 909 shares. The only meaningful buyer was Adelphi Trust, which added 724 shares. Hilltop, Eastern, and Kerr held steady. No institution initiated a new position. Net, the institutional flow was modestly negative at approximately 3,000 shares, but the reductions occurred in an environment in which WMB's stock price appreciated, leaving the dominant holders' position values higher even as they trimmed share counts. The institutional signal is balanced reduction, not selling pressure.

Asset Management Advisors holds 172,871 shares worth $12.85M, representing 54% of the reported $23.79M institutional base. During Q2, AMA reduced its position by 745 shares — a 0.4% trim — while the value of the holding grew $215K, indicating that the stock appreciated enough to absorb the share reduction and still grow in absolute terms. The result is a position that is slightly smaller in shares but larger in value than it was at the start of the quarter. AMA's behavior is consistent with a long-term holder taking modest profits or rebalancing toward a target weight without exiting the thesis.

MassMutual's Reduction Is Mostly Price-Driven
Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$8.6B116.3M0.13%Q2 2026
02
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$5.9B79.8M0.13%Q2 2026
03
STATE STREET CORP
CIK 0000093751
$5.4B72.0M0.16%Q2 2026
04
BANK OF AMERICA CORP /DE/
CIK 0000070858
$3.3B44.7M0.21%Q2 2026
05
Vanguard Portfolio Management
CIK 0002100121· Index
$3.2B43.5M0.15%Q2 2026
06
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$2.5B33.1M0.42%Q2 2026
07
MORGAN STANLEY
CIK 0000895421
$2.4B31.8M0.13%Q2 2026
08
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$2.2B29.9M0.12%Q2 2026
09
Clearbridge Investments, LLC
CIK 0001348883
$1.8B24.2M1.49%Q2 2026
10
JPMORGAN CHASE & CO
CIK 0000019617
$1.6B21.4M0.09%Q2 2026
11
Invesco Ltd.
CIK 0000914208
$1.4B19.3M0.11%Q2 2026
12
ROYAL BANK OF CANADA
CIK 0001000275
$1.4B18.5M0.20%Q2 2026
13
DEUTSCHE BANK AG\
CIK 0000948046
$1.3B17.6M0.38%Q2 2026
14
Blackstone Inc.
CIK 0001393818
$1.3B17.3M3.92%Q2 2026
15
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$1.2B15.9M0.13%Q1 2026
16
NORTHERN TRUST CORP
CIK 0000073124· Index
$991M13.3M0.12%Q2 2026
17
NORGES BANK
CIK 0001374170· Sovereign
$897M12.1M0.09%Q2 2026
18
GOLDMAN SACHS GROUP INC
CIK 0000886982
$860M11.6M0.07%Q2 2026
19
Neuberger Berman Group LLC
CIK 0001465109
$858M11.5M0.57%Q2 2026
20
UBS Group AG
CIK 0001610520
$839M11.3M0.11%Q2 2026
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Insiders at Williams Cos Inc/The
Wingo Robert R.Turner Robb EHelms Lloyd W JrWilson Terrance LanePorter John DeanBergstrom Stephen WJasek Glen G.Larsen Larry C