JHMM vs MDY: Holdings Overlap
JHMMJohn Hancock Multifactor Mid Cap ETF
John Hancock · 666 holdings · $6.0B · as of 2026-03-31
MDYState Street® SPDR® S&P MIDCAP 400® ETF Trust
State Street (SPDR) · 399 holdings · $27.1B · as of 2026-08-06
Holdings snapshots are 128 days apart (JHMM: 2026-03-31, MDY: 2026-08-06). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are JHMM and MDY?
John Hancock Multifactor Mid Cap ETF (JHMM, by John Hancock) holds 666 positions; State Street® SPDR® S&P MIDCAP 400® ETF Trust (MDY, by State Street (SPDR)) holds 399. They have 268 holdings in common, and by portfolio weight the two funds are 34.8% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 34.8%Sum of the smaller weight of each shared holding
- Shared Holdings
- 268JHMM holds 666 · MDY holds 399
- Weight in Shared Holdings
- JHMM 35%·MDY 88%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in JHMM
398 of 666 positions (65.0% of the fund) are not held by MDY. Showing the top 30 by weight.
Sector Breakdown
| Sector | JHMM | MDY |
|---|---|---|
| Industrials | 20.0% | 25.9% |
| Financials | 15.5% | 16.0% |
| Information Technology | 13.9% | 15.6% |
| Consumer Discretionary | 9.8% | 11.6% |
| Health Care | 10.7% | 10.3% |
| Other Sectors | 29.8% | 25.7% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| JHMM | +3.3% | +17.3% | +24.7% | +15.8% | +8.8% | +11.9% | 0.86% |
| MDY | +3.1% | +18.1% | +25.6% | +14.2% | +8.8% | +10.9% | 0.99% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in JHMM vs MDY →
Shared Holdings(268)
The top 10 shared positions account for 9% of the overlap, led by UTHR, FTI and MKSI.
 UTHRUnited Therapeutics Corporation COM | 0.39% | 0.62% | 0.39% |
|---|---|---|---|
 FTITechnipFMC PLC USD1 | 0.34% | 0.76% | 0.34% |
 MKSIMKS Inc. COM | 0.31% | 0.54% | 0.31% |
 NXTNextpower Inc. CLASS A COM | 0.31% | 0.40% | 0.31% |
 JLLJones Lang LaSalle Incorporated COM | 0.31% | 0.46% | 0.31% |
 OVVOvintiv Inc COM | 0.30% | 0.45% | 0.30% |
 RNRRenaissancere Holdings Ltd. COM USD1 | 0.29% | 0.38% | 0.29% |
 PRPermian Resources Corporation Class A | 0.28% | 0.44% | 0.28% |
 SCIService Corporation International COM | 0.27% | 0.64% | 0.27% |
 XPOXPO Inc COM | 0.27% | 0.63% | 0.27% |
 THCTenet Healthcare Corporation COM NEW | 0.27% | 0.60% | 0.27% |
 WCCWesco International, Inc. COM | 0.27% | 0.50% | 0.27% |
 USFDUS Foods Holding Corp COM | 0.26% | 0.64% | 0.26% |
 TOLToll Brothers, Inc. COM | 0.26% | 0.39% | 0.26% |
 EWBCEast West Bancorp Inc COM | 0.26% | 0.49% | 0.26% |
 RSReliance Inc COM | 0.25% | 0.58% | 0.25% |
 ALLYAlly Financial Inc. COM | 0.25% | 0.34% | 0.25% |
 WWDWoodward Inc. COM | 0.24% | 0.60% | 0.24% |
 AAAlcoa Corporation COM | 0.24% | 0.68% | 0.24% |
 BURLBurlington Stores Inc. COM | 0.24% | 0.64% | 0.24% |
 CWCurtiss-Wright Corporation | 0.24% | 0.72% | 0.24% |
 ENTGEntegris Inc COM | 0.24% | 0.59% | 0.24% |
 CLHClean Harbors, Inc. COM | 0.23% | 0.42% | 0.23% |
 MTZMastec, Inc. COM | 0.23% | 0.44% | 0.23% |
 BWABorgWarner Inc. COM | 0.23% | 0.37% | 0.23% |
Showing the top 250 of 268 shared holdings by overlap weight.
Frequently Asked Questions
How much do JHMM and MDY overlap?
JHMM and MDY overlap by 34.8% of portfolio weight. They share 268 holdings (JHMM holds 666 positions and MDY holds 399), based on each fund's latest SEC-reported holdings.
Is it redundant to own both JHMM and MDY?
The two portfolios are 34.8% identical by weight. Owning both is defensible: they share a meaningful core, but each fund adds exposure the other lacks.
What are the biggest shared holdings of JHMM and MDY?
The largest positions held by both funds are UTHR, FTI, MKSI, NXT and JLL. Together the top 10 shared positions account for 9% of the total overlap.
What does JHMM own that MDY doesn't?
398 positions (65.0% of JHMM) are unique to JHMM, led by TRGP, KEYS and FIX. In the other direction, 131 positions (17.4% of MDY) are unique to MDY.