How many plans does Willis Towers Watson US LLC serve?

Willis Towers Watson US LLC serves 1,065 retirement plans with $1.43T in plan assets and 10,659,639 participants, based on the latest Form 5500 filings through 2024.

What does Willis Towers Watson US LLC charge?

Plans reported $450M in total Schedule C compensation paid to Willis Towers Watson US LLC. The median plan paid $151K. Fees vary with plan size and the services each plan buys.

Filings through Oct 24, 2026.

Willis Towers Watson US LLC

Matched across 254 name variants in the filings

Willis Towers Watson US LLC summary

Willis Towers Watson US LLC appears on 1,065 retirement plans in Form 5500 Schedule C filings through plan year 2024. Those plans hold $1.43T in assets for 10,659,639 participants. The median client plan holds $226M. Most client plans are sponsored in PA, TX and NY. The largest clients by plan assets are International Business Machines Corporation, RTX Corporation and The Boeing Co. and Consolidated Subsidiaries. Plans reported $450M in direct and indirect compensation paid to Willis Towers Watson US LLC. The median is $151K per plan.

Participants: 10,659,639
Median plan assets: $226M
Median plan participants: 2,335
Median fees per plan: $151K; Schedule C direct + indirect

Top 25 client plans by assets

Latest Form 5500 filing per plan through 2024

Sponsor	State	Assets	Participants
International Business Machines Corporation, plan 005	NY	$64.5B	144,897
RTX Corporation	CT	$40.1B	192,473
The Boeing Co. and Consolidated Subsidiaries, plan 100	WA	$29.9B	167,066
Citigroup Inc.	CT	$26.9B	117,332
Fedex Corporation	TN	$26.9B	213,710
United Parcel Service of America, Inc., plan 001	GA	$21.8B	142,919
Bank of America Corporation	RI	$19.9B	154,763
Northrop Grumman Corporation	VA	$19.6B	102,066
General Electric Company, Operating as GE Aerospace	OH	$19.2B	116,523
International Business Machines Corporation, plan 001	NY	$18.9B	146,564
Pacific Gas and Electric Company	CA	$18.7B	59,597
Consolidated Edison Company of New York, Inc.	NY	$16.3B	26,293
United Parcel Service of America, Inc., plan 004	GA	$15.7B	125,164
The Boeing Co. and Consolidated Subsidiaries, plan 001	WA	$15.5B	112,268
Mayo Clinic, plan 002	MN	$15.1B	112,693
Dell Inc.	TX	$14.7B	58,607
GE Healthcare Technologies Inc.	IL	$14.0B	88,333
Mayo Clinic, plan 001	MN	$13.3B	96,323
Board of Trustees of the UPS/Ibt Full-Time Pension Plan	GA	$13.3B	103,495
National Rural Electric Cooperative Association	VA	$13.3B	76,938
Avago Technologies U.S. Inc.	CA	$13.2B	30,767
KPMG LLP	NJ	$12.1B	54,015
Exxon Mobil Corporation	TX	$12.1B	46,539
United Airlines, Inc.	IL	$11.7B	94,700
Mass General Brigham Incorporated	MA	$11.6B	96,507

International Business Machines Corporation, plan 005$64.5B
NYParticipants 144,897
RTX Corporation$40.1B
CTParticipants 192,473
The Boeing Co. and Consolidated Subsidiaries, plan 100$29.9B
WAParticipants 167,066
Citigroup Inc.$26.9B
CTParticipants 117,332
Fedex Corporation$26.9B
TNParticipants 213,710
United Parcel Service of America, Inc., plan 001$21.8B
GAParticipants 142,919
Bank of America Corporation$19.9B
RIParticipants 154,763
Northrop Grumman Corporation$19.6B
VAParticipants 102,066
General Electric Company, Operating as GE Aerospace$19.2B
OHParticipants 116,523
International Business Machines Corporation, plan 001$18.9B
NYParticipants 146,564
Pacific Gas and Electric Company$18.7B
CAParticipants 59,597
Consolidated Edison Company of New York, Inc.$16.3B
NYParticipants 26,293
United Parcel Service of America, Inc., plan 004$15.7B
GAParticipants 125,164
The Boeing Co. and Consolidated Subsidiaries, plan 001$15.5B
WAParticipants 112,268
Mayo Clinic, plan 002$15.1B
MNParticipants 112,693
Dell Inc.$14.7B
TXParticipants 58,607
GE Healthcare Technologies Inc.$14.0B
ILParticipants 88,333
Mayo Clinic, plan 001$13.3B
MNParticipants 96,323
Board of Trustees of the UPS/Ibt Full-Time Pension Plan$13.3B
GAParticipants 103,495
National Rural Electric Cooperative Association$13.3B
VAParticipants 76,938
Avago Technologies U.S. Inc.$13.2B
CAParticipants 30,767
KPMG LLP$12.1B
NJParticipants 54,015
Exxon Mobil Corporation$12.1B
TXParticipants 46,539
United Airlines, Inc.$11.7B
ILParticipants 94,700
Mass General Brigham Incorporated$11.6B
MAParticipants 96,507

Top client states

PA102 plans
TX99 plans
NY87 plans
OH71 plans
MI65 plans

Frequently asked questions

Who uses Willis Towers Watson US LLC?: 1,065 retirement plans list Willis Towers Watson US LLC as a service provider on Schedule C of Form 5500. The largest clients by plan assets include International Business Machines Corporation, RTX Corporation, The Boeing Co. and Consolidated Subsidiaries, Citigroup Inc. and Fedex Corporation. Most client plans are sponsored in PA, TX and NY.
How many plans does Willis Towers Watson US LLC serve?: Willis Towers Watson US LLC serves 1,065 retirement plans with $1.43T in plan assets and 10,659,639 participants, based on the latest Form 5500 filings through 2024.
What does Willis Towers Watson US LLC charge?: Plans reported $450M in total Schedule C compensation paid to Willis Towers Watson US LLC. The median plan paid $151K. Fees vary with plan size and the services each plan buys.

Analytics

Market position · 2024

Plans served1,065+70 YoYRank #25 of mapped providers

Assets under administration$1.43T1.5%Rank #3 by share of filed assets

Fees received$450MMedian $151,140/planSum across Schedule C direct + indirect

Net wins YoY+55174 won - 119 lostPlan-level switch detection

Plans served · 5-year trajectory

Plan count by year, with the share of all plans.

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Customer-base shape

Participant bands, asset bands, top states and top industries.

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5-year plans-served trajectory
Customer-base shape
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Plans won and lost
Top plans by assets

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Fund lineups on plans this firm keeps

Search these plans

Large plans that name WTW as recordkeeper and list their funds in their filing. Files as WILLIS TOWERS WATSON US LLC.

Plans

$10.6B in funds

In collective trusts

49%

average plan

In WTW funds

average plan

In index funds

32%

average plan

Top managers in these lineups

Manager	Plans
BlackRock	11
State Street (SSgA)	8
Vanguard	7
Morgan Stanley	6
Northern Trust	5

Target-date series

Series	Plans
T. Rowe Price Retirement	1
Voya Target Solution	1
Vanguard Target Retirement	1

Covers 71,410 large plans that list their funds in their annual filing. Updated Nov 6, 2026. Shares describe these plans, not the whole market.