IONX vs AMA overlap
IONX and AMA overlap 47.7% by weight, across 1 shared holdings.
Pick 2 to 4 ETFs.
Top shared holdings
| Holding | IONX | AMA | Overlap |
|---|---|---|---|
| United States Treasury Bill | 66.34% | 47.74% | 47.74% |
Overlap by weight adds up the smaller weight of each holding the funds share, so 100% means identical portfolios. Long securities only: derivatives and cash vehicles are left out. Sources: IONX, SEC Form N-PORT, July 31, 2026; AMA, SEC Form N-PORT, July 31, 2026.
Largest institutions holding both
| Firm | IONX | AMA |
|---|---|---|
| Susquehanna International Group, LLP | $361K | $3.5M |
| Tower Research Capital LLC (TRC) | $7K | $1K |
This compares who owns the funds, not what the funds hold. From SEC Form 13F, for managers with $100M+ in US securities.
Who owns them: IONX institutional holders, AMA institutional holders.
Frequently asked questions
How much do IONX and AMA overlap?
47.7% by weight, with 1 holdings in common, using holdings for IONX as of July 31, 2026 and AMA as of July 31, 2026. The largest shared position is United States Treasury Bill.
Do institutions hold both IONX and AMA?
2 Form 13F filers report positions in both, out of 15 that report either one.
How is overlap by weight worked out?
For each holding the two funds share, take the smaller of the two weights, then add those up. Identical portfolios score 100%.