EFFI - Harbor ETF Trust - Harbor Osmosis International Resource Efficient ETF
EFFI is actively managed investing in resource-efficient companies. These companies are characterized by lower carbon emissions, reduced water consumption, and minimal waste generation. The fund uses a proprietary quant strategy based on resource efficiency scores to predict companies that may outperform the MSCI World ex-US Index.
- Sector
- Financial Services
- Industry
- Asset Management
- Market Cap
- $151.6M
- Beta
- 0.49
- 52-Week Range
- 22.75-28.08
- Dividend Yield
- $1.05
- IPO Date
- Dec 17, 2024
- Exchange
- AMEX
EFFI Options Snapshot
Options pricing data for EFFI is refreshed daily after the close. When listed contracts exist, this page surfaces the latest at-the-money implied volatility, max pain strike, dealer gamma exposure (GEX), and 25-delta skew. Listed contracts and live snapshots appear once the options chain has been published by the exchange for the most recent session.
What This Page Covers
The EFFI overview links into per-metric analysis views: max pain, gamma exposure, volatility skew, expected move, options chain, open interest history, and aggregate Greeks. Microstructure data is available on short interest, short volume, fail-to-deliver, and market structure.
EFFI fund facts: expense ratio 0.55%, assets under management $145.2M, NAV $25.82 as of the data source's update on Oct 8, 2026, 82 holdings in its latest file, launched Dec 11, 2024, issued by Harbor. See the EFFI holdings.
Frequently asked EFFI overview questions
- What is EFFI?
- EFFI is the ticker symbol for Harbor ETF Trust - Harbor Osmosis International Resource Efficient ETF, an listed exchange-traded fund. EFFI is actively managed investing in resource-efficient companies. These companies are characterized by lower carbon emissions, reduced water consumption, and minimal waste generation. Listed on AMEX. EFFI is the ETF ticker shown on this page; ETF traders use the fund for diversified exposure to its underlying basket, for sector and factor rotation, and for hedging or replication strategies via the listed options chain.
- What are EFFI's key statistics?
- Harbor ETF Trust - Harbor Osmosis International Resource Efficient ETF (EFFI) carries a market capitalization of $151.6M, 52-week range of 22.75-28.08. Full holdings disclosure, expense ratio, and tracking-error history live on the per-ticker fundamentals page or the sponsor's site; daily NAV and premium/discount-to-NAV are accessible from the same view. These structural inputs frame how the ETF options market prices implied volatility relative to its constituents.
- What sector or industry does EFFI belong to?
- Harbor ETF Trust - Harbor Osmosis International Resource Efficient ETF operates in the Financial Services sector, in the Asset Management industry. Sector classification affects how the ticker correlates with sector ETFs, how it reacts to macro factors like rate moves and commodity prices, and how its options pricing compares to sector peers. Compare EFFI's implied volatility and skew against sector benchmarks to gauge whether the options market is pricing single-name or systemic risk relative to the broader peer group.
- How current is the EFFI data on this page?
- Options snapshots refresh after each trading session; if no snapshot is currently posted for EFFI, it usually reflects low options liquidity or a recently listed name. Fund-level fields (sponsor, expense ratio, holdings concentration where available) refresh from the vendor feed nightly. ETF-specific filings (N-CSR, N-PX, N-CEN) update on the SEC EDGAR cadence. FINRA microstructure data refreshes on the source's cadence; for ETFs the off-exchange volume signal is dominated by authorized-participant creation and redemption rather than directional flow.