FBCG vs IBB: Holdings Overlap
FBCGFidelity Blue Chip Growth ETF
Fidelity · 214 holdings · $6.9B · as of 2026-04-30
iShares · 254 holdings · $9.3B · as of 2026-03-31
Holdings snapshots are 30 days apart (FBCG: 2026-04-30, IBB: 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 FBCG and IBB?
Fidelity Blue Chip Growth ETF (FBCG, by Fidelity) holds 214 positions; iShares Biotechnology ETF (IBB, by iShares) holds 254. They have 13 holdings in common, and by portfolio weight the two funds are 1.5% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 1.5%Sum of the smaller weight of each shared holding
- Shared Holdings
- 13FBCG holds 214 · IBB holds 254
- Weight in Shared Holdings
- FBCG 1%·IBB 28%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 FBCG
201 of 214 positions (98.3% of the fund) are not held by IBB. Showing the top 30 by weight.
Sector Breakdown
| Sector | FBCG | IBB |
|---|---|---|
| Health Care | 5.5% | 91.0% |
| Information Technology | 48.3% | 0.0% |
| Communication Services | 17.1% | 0.0% |
| Consumer Discretionary | 16.8% | 0.0% |
| Industrials | 6.1% | 0.0% |
| Other Sectors | 5.2% | 0.0% |
| Unclassified | 0.7% | 8.9% |
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. “Unclassified” is weight we could not classify (1% of FBCG, 9% of IBB).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| FBCG | +2.6% | +14.4% | +23.8% | +27.2% | +13.5% | — | 0.04% |
| IBB | -0.3% | +17.3% | +51.0% | +16.4% | +3.1% | +7.4% | 0.21% |
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 FBCG vs IBB →
Shared Holdings(13)
The top 10 shared positions account for 97% of the overlap, led by GILD, ALNY and TVTX.
 GILDGilead Sciences Inc. COM | 0.68% | 7.75% | 0.68% |
|---|---|---|---|
 ALNYAlnylam Pharmaceuticals Inc. COM | 0.23% | 3.99% | 0.23% |
 TVTXTravere Therapeutics Inc COM | 0.09% | 0.25% | 0.09% |
 REGNRegeneron Pharmaceuticals, Inc. COM | 0.09% | 7.21% | 0.09% |
 MRNAModerna Inc COM | 0.07% | 1.68% | 0.07% |
 PRAXPraxis Precision Medicines Inc COM NEW | 0.07% | 0.77% | 0.07% |
 ROIVRoivant Sciences Ltd SHS | 0.07% | 1.24% | 0.07% |
 ARGXargenx SE, ADR | 0.06% | 3.07% | 0.06% |
 SRRKScholar Rock Holding Corp. COM | 0.06% | 0.36% | 0.06% |
 PCVXVaxcyte Inc COM | 0.03% | 0.75% | 0.03% |
 LEGNLegend Biotech Corp. | 0.02% | 0.22% | 0.02% |
 APGEApogee Therapeutics Inc. COM | 0.01% | 0.37% | 0.01% |
 CAICaris Life Sciences Inc. COM | 0.00% | 0.20% | 0.00% |
Frequently Asked Questions
How much do FBCG and IBB overlap?
FBCG and IBB overlap by 1.5% of portfolio weight. They share 13 holdings (FBCG holds 214 positions and IBB holds 254), based on each fund's latest SEC-reported holdings.
Is it redundant to own both FBCG and IBB?
The two portfolios are 1.5% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of FBCG and IBB?
The largest positions held by both funds are GILD, ALNY, TVTX, REGN and MRNA. Together the top 10 shared positions account for 97% of the total overlap.
What does FBCG own that IBB doesn't?
201 positions (98.3% of FBCG) are unique to FBCG, led by NVDA, AAPL and GOOGL. In the other direction, 241 positions (72.0% of IBB) are unique to IBB.