SEIS vs PSCI overlap
SEIS and PSCI overlap 6.8% by weight, across 21 shared holdings.
Pick 2 to 4 ETFs.
Top shared holdings
| Holding | SEIS | PSCI | Overlap |
|---|---|---|---|
| ZURN Elkay WaterZWS | 0.89% | 2.42% | 0.89% |
| Argan Inc.AGX | 0.86% | 3.21% | 0.86% |
| FED Signal Corp.FSS | 0.84% | 2.25% | 0.84% |
| Powell INDS Inc.POWL | 0.53% | 2.81% | 0.53% |
| Astec IndustriesASTE | 0.40% | 0.40% | 0.40% |
| LYFT Inc.-aLYFT | 0.38% | 1.95% | 0.38% |
| Openlane Inc.OPLN | 0.34% | 1.41% | 0.34% |
| Kennametal Inc.KMT | 0.29% | 0.87% | 0.29% |
| Proto Labs Inc.PRLB | 0.28% | 0.62% | 0.28% |
| Healthcare ServsHCSG | 0.24% | 0.50% | 0.24% |
| Greenbrier COSGBX | 0.19% | 0.50% | 0.19% |
| HNI Corp.HNI | 0.19% | 0.75% | 0.19% |
| Matson Inc.MATX | 0.18% | 1.96% | 0.18% |
| Skywest Inc.SKYW | 0.16% | 1.19% | 0.16% |
| Deluxe Corp.DLX | 0.16% | 0.38% | 0.16% |
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: SEIS, SEC Form N-PORT, June 30, 2026; PSCI, SEC Form N-PORT, May 31, 2026.
Largest institutions holding both
| Firm | SEIS | PSCI |
|---|---|---|
| UBS Group AG | $8K | $9.3M |
| Osaic Holdings, Inc. | $3.6M | $4.0M |
| Morgan Stanley | $19K | $3.4M |
| Citadel Advisors LLC | $367K | $1.2M |
| Global Retirement Partners, LLC | $907K | $419K |
| Cetera Investment Advisers | $209K | $516K |
| Jones Financial Companies LLLP | $5K | $521K |
| Royal Bank of Canada | $168K | $354K |
| Harbour Investments, Inc. | $2K | $181K |
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: SEIS institutional holders, PSCI institutional holders.
Frequently asked questions
How much do SEIS and PSCI overlap?
6.8% by weight, with 21 holdings in common, using holdings for SEIS as of June 30, 2026 and PSCI as of May 31, 2026. The largest shared position is ZWS.
Do institutions hold both SEIS and PSCI?
9 Form 13F filers report positions in both, out of 84 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%.