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Buffer ETF vs collar: what are you paying the fund to do?

A buffer ETF holds options that cap your upside and soak up the first slice of a loss, for a yearly fee. A collar does a similar job on shares you own, with strikes you pick. The two protect different parts of a drop, and that is the part most people miss.

Comparison · 8-minute read · Updated 2026-11-09

The short answer

A buffer ETF takes the first part of a loss for you, say the first 10%, over a set period, usually a year. Below that, you lose again. A Collar with a put 10% below does the opposite: you take the first 10%, and the put covers everything after it.

So the buffer fund looks better in a mild drop, and the collar looks better in a crash. The fund is easy and charges a fee. The collar takes work and needs 100 shares and options approval.

How each one is built

A buffer fund usually holds options on an index, not the shares themselves. Its options set three numbers for one outcome period:

• The buffer: how much of the first loss it absorbs.
• The cap: the most you can gain.
• The fee: a yearly expense ratio.

Underneath, that is close to a put spread collar: a put at the start price, a second put sold lower, and a call sold above. A DIY collar skips the middle put, so its floor never ends.

A worked example (hypothetical)

Two investors put $50,000 into the same made-up index fund for one year. Every number here is invented and round.

• Buffer fund: a 10% buffer, a 12% cap and a 0.80% yearly fee. The fee on $50,000 is $400. Bought on the first day of its period.
• DIY collar: 100 shares at $500. Buy the one-year $450 put (10% below) for $15. Sell the $560 call (12% above) for $12. Net cost $3, or $300.

Both columns leave out dividends to keep the math clean.

How the rows work:

• Buffer, down 20%: the fund absorbs the first 10%, so you lose the other 10%: −$5,000. Minus the $400 fee: −$5,400.
• Collar, down 20%: shares fall to $400, a $10,000 loss. The $450 put is worth $50 × 100 = $5,000. Net −$5,000, minus the $300 cost: −$5,300.
• Up 20%: the fund stops at 12%, or $6,000, minus $400 = +$5,600. The collar's $560 call caps the shares at +$6,000, minus $300 = +$5,700.

The down-20% row

That row looks like a tie, and that is the trap. The buffer is often sold as "protection," but at −20% it took only the first slice. You still lost $5,400.

Go to −30% and the gap opens. The buffer fund loses $10,400. The collar still stops at $5,300, because its put covers everything below $450.

In a mild year it flips. At −5% the fund's buffer swallows the whole drop and you lose only the fee, while the collar holder eats $2,800. Pick the one that matches the drop you're actually worried about.

The mid-period trap

A buffer fund's numbers are set on its reset date, for the start price on that date. Buy later and you get whatever is left.

Say the index has already fallen 8% since the period began. The 10% buffer covered the drop from 100 to 90 on the index. The index is now at 92. Only the slice from 92 to 90 is left. If it falls another 10 points, the buffer takes about 2 of them and you take the rest.

It works the other way too. If the index is already up 10%, most of the 12% cap is used, so you have little upside left and the full risk of a drop back. Look up the buffer and cap left today on the fund's own page before you buy, not the launch numbers.

A collar has no such trap. It starts the day you open it, at strikes you pick from today's price.

Pick a buffer fund if… pick a collar if…

A collar's call can get your shares called away, and the put costs money each period. Protective put vs collar and the zero-cost collar cover both. Fund-based option strategies work much like covered call ETFs: you pay a manager to run options you could run yourself. For every hedge in one table, see the options strategy comparison chart.

In Canada, a long put plus a covered call on shares you own is widely allowed in a TFSA or RRSP, but options permissions differ by broker.

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