ETF vs Mutual Fund: Same Pooling Idea, Different Trading Mechanics

Yes. ETF shares trade at market prices, which can be above or below reported NAV. Market-making and creation/redemption mechanisms tend to keep the difference constrained in normal conditions, but gaps can widen during periods of market stress or thin liquidity.

Some are, but many mutual funds track an index. Likewise, ETFs can be passive or actively managed; the wrapper itself does not determine whether the strategy inside it is active or passive.

ETFs generally have no fund-imposed minimum beyond the price of one share, since they trade on an exchange like a stock; some brokers also support buying fractional shares. Many mutual funds set their own initial minimum investment, which varies by fund and share class and can be higher for actively managed funds than for index funds.

Yes, and usually do by a small margin. The sources are the expense ratio, how each vehicle handles cash from dividends and flows, sampling differences where the index is large, securities lending revenue and how it is shared, and the exact timing of index rebalancing. In a taxable account, the after-tax difference can be larger than the pre-tax one because the two structures realize gains differently. Same index does not mean same result.

The two structures diverge sharply here. A mutual fund order is priced at the next calculated net asset value, so an order placed after the cutoff receives the following day's price and the buyer does not know it at the time of the order. An ETF order simply does not execute until the market reopens, and it can be modified or cancelled before then. Forward pricing on one side and continuous trading on the other is the same distinction that governs intraday orders.

Mutual funds, historically, because the plan recordkeeping systems that allocate contributions across participants were built around once-daily pricing and fractional shares. Intraday-traded shares complicate that. Some plans do offer exchange-traded products through a brokerage window, but the core menu in most plans is fund-based. This is a structural reason the choice may not be available inside a plan even where both vehicles exist for the same strategy.

A share class is a version of the same mutual fund portfolio sold on different fee terms, distinguished by sales charges, ongoing distribution fees and minimum investment. The underlying holdings are identical; the cost to the investor is not. Exchange-traded products generally do not use this structure, so one ticker means one fee. Comparing a fund and an ETF therefore requires identifying which share class the fund figure refers to.

Both collect income from the underlying holdings and distribute it, typically on a set schedule. The mechanics differ in the gap: an ETF holds received dividends as cash until its own distribution date, which creates a small drag when markets rise, while a fund handles it internally. Reinvestment also differs, since automatic reinvestment is standard for funds and depends on the brokerage for an ETF. The tax treatment of the distribution itself is the same either way.

Yes. Sponsors close products that fail to gather enough assets to be economic, announcing a closure date after which the fund sells its holdings and distributes cash to remaining shareholders. Holders can also sell in the market before then, though liquidity often deteriorates once a closure is announced. In a taxable account the liquidation is a realization event on the sponsor's timetable rather than the holder's, which is the practical consequence.