How big is Core One Solutions LLC's plan?

Core One Solutions LLC's plan reported $16.8M in assets and 172 participants for 2024.

Original filing (PDF)20251010220046NAL0013827840004

Core One Solutions LLC

Name: Core One Solutions LLC — Core One Solutions 401(k), Form 5500 (2024)
Creator: Core One Solutions LLC
License: https://www.usa.gov/government-works

Form 5500

FILING_RECEIVED

Core One Solutions 401(k) Plan

401(k) retirement plan · Core One Solutions LLC's Core One Solutions 401(k) Plan held $16.8M in plan assets for 172 participants in 2024, with Guideline as recordkeeper.

Signals · 3

Late participant contributions38% in single holdingCorrective distributions issued

Active participants

172

Accounts w/ balance

253

Plan assets (EOY)

$16.8M

Net assets (EOY)

$16.8M

People on this filing

QIAN LIU signed Core One Solutions LLC's 2024 Form 5500 as plan administrator.

QIAN LIU — Plan Administrator — Form 5500 signer

Get verified email & phone for these signers

Signer names are public record from the Form 5500 e-signature.

Plan identifiers

Core One Solutions LLC's EIN is 46-4143090.

EIN 46-4143090

Plan number 001

Plan year 2024

ACK ID 20251010220046NAL0013827840004

Official Form 5500 document

Download the official 2024 Form 5500 (PDF) for Core One Solutions LLC from the U.S. Department of Labor's EFAST2 system.

Download the official 2024 Form 5500 (PDF)

Plan features

Core One Solutions LLC's plan includes profit-sharing, ERISA 404(c) participant direction, a 401(k) feature, automatic enrollment, a default investment (QDIA).

Decision-maker contacts

One unlock reveals every key decision-maker — plan signer, CFO, HR & Benefits — with verified email + LinkedIn for CORE ONE SOLUTIONS LLC.

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How this plan invests

This plan

31 securities

funds · stocks · CUSIPs

Holdings are itemized directly on this plan's Schedule of Assets, below.

Plan health score

Above-average plan

Directional indicator from public Form 5500 data — compliance & integrity, total plan cost, participant health and vendor stack, benchmarked against same-size peers. Not a fiduciary tool.

Compliance & integrity

Total plan cost

Plan health

Vendor & structure

100

Knocking points off

Delinquent participant contributions reported (Schedule H 4a) — 122K (4% of contributions).
Corrective distributions issued (likely failed ADP/ACP testing).

Plan sponsor

Name

CORE ONE SOLUTIONS LLC

EIN

all filings

Address

22365 BRODERICK DRIVE · SUITE 400 · STERLING, VA · 20166

Phone

(703) 719-4701

Industry

Professional & Technical Services

Plan administrator

Name

GUIDELINE RK, LLC

EIN

30-1418950

City

BURLINGAME, CA

Phone

(888) 228-3491

Plan characteristics

Plan number

001

Plan year

2024

Plan year begin

2024-01-01

Tax period

2024-12-31

Filed

2025-10-10

Pension benefit codes

2E · Profit-sharing

2F · ERISA section 404(c)

2G · Total participant-directed accounts

2J · 401(k) feature

2K · 401(m) arrangement

2S · Automatic enrollment

2T · Default investment account (QDIA)

3D · Pre-approved plan (master / prototype / VS)

Service providers (Schedule C)

3 rows

Custodian

Name	EIN	Location	Relation	Direct comp	Indirect comp
BENEFIT TRUST COMPANY	43-1971558	—	CUSTODIAN	$0	—

Recordkeeper

Name	EIN	Location	Relation	Direct comp	Indirect comp
GUIDELINE, INC.	47-4474775	—	RECORDKEEPER	$14K	—

Advisor / Consultant

Investments

31 direct securities· $16.8M(100% of reported assets)

Common Collective Trusts

$16.5M

28 holdings

Bonds / Notes

$241K

1 holding

Mutual Funds

$62K

2 holdings

					% of plan
Vanguard Total Stock Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$6.4M	38.0%
Vanguard Developed Markets Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$2.6M	15.2%
Vanguard Total Bond Market Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$2.0M	12.2%
Vanguard Emerging Markets Stock Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$1.3M	7.7%
Vanguard Real Estate Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$808K	4.8%
Vanguard 500 Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$799K	4.7%
Vanguard Total International Bond Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$714K	4.2%
Vanguard Growth Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$636K	3.8%
Vanguard Information Technology Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$371K	2.2%
Various, bearing interest at * Participant loans 4.25% - 9.50% -	Bonds / Notes	—	—	$241K	1.4%
Vanguard Communication Services Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$154K	0.9%
Vanguard Extended Market Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$140K	0.8%
Vanguard Industrials Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$134K	0.8%
Vanguard Small-Cap Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$110K	0.7%
Vanguard Total International Stock Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$95K	0.6%
Vanguard Short-Term Inflation-Protected Securities Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$61K	0.4%
Vanguard Large-Cap Index Fund Mutual Fund NR 950 Vanguard Mid-Cap Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$48K	0.3%
Vanguard Cash Reserves Federal Money Market Fund Mutual Fund NR	Mutual Funds	—	—	$43K	0.3%
Vanguard Dividend Appreciation Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$32K	0.2%
Vanguard International Equity Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$20K	0.1%
Vanguard Small-Cap Growth Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$19K	0.1%
Vanguard Mid-Cap Growth Index Mutual Fund NR	Mutual Funds	—	—	$19K	0.1%
Vanguard Long-Term Bond Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$18K	0.1%
Vanguard Value Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$14K	<0.1%
Vanguard Intermediate-Term Bond Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$10K	<0.1%
Vanguard Materials Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$8K	<0.1%
Vanguard Short-Term Bond Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$7K	<0.1%
Vanguard Mid-Cap Value Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$6K	<0.1%
Vanguard Small Cap Value Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$6K	<0.1%
Vanguard Health Care Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$6K	<0.1%
Vanguard FTSE All-World ex-US Small Capital Index Fund Mutual Fund NR	Common Collective Trusts	—	—	$3K	<0.1%