Ion Trading, Inc. 401(k) Plan: Login, Facts & Contact Information

Ion Trading, Inc. 401(k) Plan Facts

Plan name
ION GROUP 401(K) PLAN
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
ION TRADING, INC.
Participants
2,696 (1,280 active employees)
Former employees with a balance
1,327
Plan assets
$565,419,031 at Dec 31, 2024
Average account balance
$224,729 across 2,516 accounts
Employer contributions
$5,182,057 in plan year 2024 (21% of all contributions)
Recordkeeper
Fidelity Investments Institutional
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Jun 1, 2000
✓ Employer contributions— Automatic enrollment✓ Default investment for undecided participants✓ Participants choose their own investments✓ Self-directed brokerage window✓ Profit sharing— Company stock (ESOP)

Source: Form 5500 for plan year 2024 (Jan 1, 2024 – Dec 31, 2024), filed Oct 10, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $25.3 million went into the plan in contributions, $5.18 million of it from the employer (21%).
  • $51.6 million was paid out to participants.
  • Investment and other income added $79.2 million.

How the Ion Trading, Inc. 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
2019921$112.8 million$829,801$11.3 million
2020852$234.4 million$2.04 million$31.2 million
20211,462$529.3 million$5.03 million$50.5 million
20222,536$424.5 million$4.68 million$36.0 million
20232,573$512.4 million$5.40 million$37.1 million
20242,696$565.4 million$5.18 million$51.6 million

Ion Trading, Inc. 401(k) Contact Information

Phone
212-906-0050
Mailing address
1345 AVENUE OF THE AMERICAS FLOOR 49, NEW YORK NY 10105
Plan sponsor
ION TRADING, INC.
Employer identification number (EIN)
36-3080374
Plan number
002

Questions about the Ion Trading, Inc. 401(k)

Does Ion Trading, Inc contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $5.18 million, 21% of all contributions.

Does the Ion Trading, Inc 401(k) have automatic enrollment?

No. The plan does not report automatic enrollment; employees enroll themselves.

How many people are in the Ion Trading, Inc 401(k) plan?

2,696 participants at the start of plan year 2024, 1,280 of them active employees, and 1,327 former employees who still had money in the plan.

What is the average 401(k) balance at Ion Trading, Inc?

About $224,729 per account: $565.4 million in plan assets across 2,516 accounts with a balance at the end of plan year 2024.

Who manages the Ion Trading, Inc 401(k) accounts?

Fidelity NetBenefits (listed on the filing as FIDELITY INVESTMENTS INSTITUTIONAL) is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at Ion Trading, Inc. How do I access my 401(k)?

Your account stays with Fidelity NetBenefits after you leave, so you can log in with the same credentials. If your balance was small, the plan may have rolled it into an IRA in your name. If you can't find it, Beagle can locate it for you.

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