SPYG vs MGK: Holdings Overlap
SPYGState Street® SPDR® Portfolio S&P 500® Growth ETF
State Street (SPDR) · 147 holdings · $54.7B · as of 2026-08-06
MGKVanguard Mega Cap Growth Index Fund
Vanguard · 59 holdings · $33.7B · as of 2026-03-31
Holdings snapshots are 128 days apart (SPYG: 2026-08-06, MGK: 2026-03-31). 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 SPYG and MGK?
State Street® SPDR® Portfolio S&P 500® Growth ETF (SPYG, by State Street (SPDR)) holds 147 positions; Vanguard Mega Cap Growth Index Fund (MGK, by Vanguard) holds 59. They have 49 holdings in common, and by portfolio weight the two funds are 70.8% identical. In practical terms the pair is heavily overlapping, with largely the same stocks driving both funds.
- Overlap by Weight
- 70.8%Sum of the smaller weight of each shared holding
- Shared Holdings
- 49SPYG holds 147 · MGK holds 59
- Weight in Shared Holdings
- SPYG 75%·MGK 95%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 SPYG
98 of 147 positions (24.8% of the fund) are not held by MGK. Showing the top 30 by weight.
Sector Breakdown
| Sector | SPYG | MGK |
|---|---|---|
| Information Technology | 52.5% | 54.4% |
| Communication Services | 15.3% | 16.7% |
| Consumer Discretionary | 8.4% | 13.1% |
| Financials | 9.0% | 4.9% |
| Industrials | 6.4% | 3.0% |
| Other Sectors | 8.4% | 7.8% |
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 |
|---|---|---|---|---|---|---|---|
| SPYG | +4.4% | +15.6% | +25.4% | +26.9% | +14.2% | +17.9% | 0.47% |
| MGK | +3.8% | +10.2% | +19.4% | +24.7% | +14.0% | +18.8% | 0.32% |
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 SPYG vs MGK →
Shared Holdings(49)
The top 10 shared positions account for 78% of the overlap, led by NVDA, MSFT and AAPL.
 NVDANVIDIA Corp. COM | 14.58% | 13.75% | 13.75% |
|---|---|---|---|
 MSFTMicrosoft Corp. COM | 10.20% | 9.01% | 9.01% |
 AAPLApple Inc. COM | 6.30% | 12.60% | 6.30% |
 GOOGLAlphabet Inc. CAP STK CL A | 5.76% | 5.51% | 5.51% |
 AVGOBroadcom Inc COM | 5.47% | 4.40% | 4.40% |
 GOOGAlphabet Inc. CAP STK CL C | 4.63% | 4.37% | 4.37% |
 AMZNAmazon.com, Inc. COM | 3.88% | 4.59% | 3.88% |
 METAMeta Platforms, Inc., Class A | 3.56% | 4.17% | 3.56% |
 LLYEli Lilly & Co. COM | 2.59% | 3.17% | 2.59% |
 TSLATesla Inc COM | 1.53% | 4.18% | 1.53% |
 AMDAdvanced Micro Devices Inc. COM | 2.19% | 1.49% | 1.49% |
 LRCXLam Research Corporation COM NEW | 1.05% | 1.25% | 1.05% |
 PLTRPalantir Technologies, Inc., Class A | 0.98% | 1.42% | 0.98% |
 VVisa, Inc., Class A | 0.93% | 1.97% | 0.93% |
 MAMasterCard Incorporated CL A | 0.86% | 1.72% | 0.86% |
 NFLXNetflix, Inc. COM | 0.85% | 1.76% | 0.85% |
 GEVGE Vernova Inc. COM | 0.74% | 1.14% | 0.74% |
 KLACKLA Corp. COM NEW | 0.69% | 0.98% | 0.69% |
 APHAmphenol Corporation CL A | 0.58% | 0.80% | 0.58% |
 CRWDCrowdstrike Holdings, Inc., Class A | 0.58% | 0.56% | 0.56% |
 ANETArista Networks Inc COM SHS | 0.55% | 0.70% | 0.55% |
 SNDKSandisk Corporation COM | 0.51% | 0.62% | 0.51% |
 WELLWelltower Inc. COM | 0.46% | 0.74% | 0.46% |
 PANWPalo Alto Networks Inc COM | 0.45% | 0.71% | 0.45% |
 BKNGBooking Holdings Inc COM | 0.44% | 0.71% | 0.44% |
Frequently Asked Questions
How much do SPYG and MGK overlap?
SPYG and MGK overlap by 70.8% of portfolio weight. They share 49 holdings (SPYG holds 147 positions and MGK holds 59), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPYG and MGK?
The two portfolios are 70.8% identical by weight. Owning both mostly doubles down on the shared core rather than diversifying: the same large positions drive both funds.
What are the biggest shared holdings of SPYG and MGK?
The largest positions held by both funds are NVDA, MSFT, AAPL, GOOGL and AVGO. Together the top 10 shared positions account for 78% of the total overlap.
What does SPYG own that MGK doesn't?
98 positions (24.8% of SPYG) are unique to SPYG, led by MU, BRK-B and JPM. In the other direction, 10 positions (4.4% of MGK) are unique to MGK.