Protecting profits does not have to mean exiting a winning trade. Here is the full walkthrough of one of the most underused strategies in the modern investor's toolbox, with every number shown.

When markets surge, investors face a tricky question: lock in profits now, or stay in the position and risk giving some back? There is a smarter path, one that defends your gains without walking away from future upside. It is called the collar, it is standard practice among institutions and hedge funds, and it is a disciplined way to manage risk while your capital keeps working. This walkthrough builds one on SPY, step by step, and then does something most collar articles skip: it prices the trade-offs honestly, including the ones the brochure leaves out.

A collar is three components working as one position. You own 100 shares of a stock or ETF. You sell one out-of-the-money call against them, which generates income and caps your upside. And you buy one out-of-the-money put, which sets a floor under your downside. Think of it as a covered call paired with a protective put: you surrender some upside to help pay for protection, converting a raw directional holding into a structured position with a known worst case. It is particularly useful after a strong rally, when the risk and reward of holding naked long exposure have quietly shifted against you, and it keeps the shares in your account, which matters for dividends and for staying invested in a thesis you still believe.

Suppose you own 100 shares of SPY trading near $607, up substantially over your holding period, and you want to guard the gain through the next few months without selling. Step one is already done: you own the shares.

Step two, sell the call. You sell a 625 call about 40 days out, roughly a 32 delta, about 2.9 percent above the market, for $5.93 per share: $593 into the account. This caps your upside at $625 through the call's expiration, and if SPY rallies through the strike, your shares are likely called away at a locked-in profit.

Step three, buy the put. You use that income to help fund a 575 put about 115 days out, roughly four months of protection at a strike 5.3 percent below the market, around a 25 delta, for $10.70 per share: $1,070 out. The longer tenor is deliberate, and it makes this a diagonal collar rather than a matched-expiration one: the put buys a full season of protection, while the shorter call is the first of several you can sell against it.

The net arithmetic: $1,070 paid for the put, $593 collected from the call, a net cost of $477, or $4.77 per share. That is the opening premium for a defined floor through mid-autumn of the position's life, and, as the financing section below covers, it is a starting cost rather than a final one.

Now put the whole position on one graph, valued from today's $607, at the call's horizon. Below $575, the loss is capped: the maximum drawdown from here is $36.89 per share, the $32.12 drop to the floor plus the $4.77 net premium, which is $3,689 per contract, or about 6.1 percent of the position. Above $625, the gain is capped at $13.11 per share, the $17.88 to the ceiling minus the premium, which is $1,311, about 2.2 percent. In between, the position tracks SPY, offset by the premium, with breakeven near $612.

Say the uncomfortable part plainly, because the brochure version never does: the floor is not zero loss; it is a chosen maximum loss. From today's price, this collar risks about 6.1 percent to make at most 2.2 percent over the call's window, and if that were a standalone trade it would be a poor one. It is not a standalone trade. The holder's real frame is the position's whole history: the floor locks in the bulk of gains already earned, the asymmetry is offset by probability (the 575 floor is meaningfully less likely to be reached than the nearer 625 ceiling), and the net cost is a first installment that the financing program below works to recover. A collar is not an alpha trade. It is insurance with a rebate, and it should be judged as insurance.

Here is where the diagonal structure earns its keep. The 115-day put outlives the 40-day call by roughly two more monthly cycles, so as each call expires or is closed, you can sell another out-of-the-money call for the next month. Done consistently, those additional credits grind the net cost of the hedge down, sometimes to zero and occasionally past it. That is the honest version of the popular claim that a collar can finance itself: it can, but never freely, because every new call sold is another month of capped upside. Zero cost is not zero price; the price simply moves from the debit column to the opportunity column, and in a rip-roaring rally the opportunity column is where the real money hides.

Two mechanical fine-print items come with the diagonal, and most articles skip both. First, the coverage gap: in any stretch where you have not yet sold the next call, you are paying full freight on the put with no offsetting income, which is fine if deliberate and expensive if forgotten. Second, the orphaned put: if SPY rips through $625 and your shares are called away, you still own a 575 put with weeks or months of life remaining, and that put is no longer a hedge; it is a standalone bearish bet you never chose to make. The playbook: when assignment takes the shares, close the put or consciously re-underwrite it as its own trade, but never let a leftover hedge masquerade as a position.

With this collar in place: downside is protected below $575, less the premium paid; upside is capped at $625 through the current call; the net debit is limited and potentially recoverable through further call sales; and you keep the shares, so dividends keep arriving and your thesis stays intact. One caution the standard version of this article states too confidently: collars can interact with tax rules. The IRS straddle and qualified covered call provisions can suspend holding periods or affect dividend treatment depending on strikes and timing, so the blanket promise that tax treatment "remains intact" is not one an honest writer can make; confirm your specific structure with a tax professional before assuming anything. The strategy's investment logic does not depend on the tax answer, but your after-tax result might.

Collars are routine for institutions and rare in retail accounts, for reasons that are mostly temperamental. Some investors cannot stand a capped upside. Some never learned the construction. Many assume protection is too expensive, without ever pricing the version where short calls pay most of the bill. And some simply do not want to manage options at all. That neglect is precisely where the edge lives: done correctly, a collar is among the cheapest forms of portfolio insurance available, and, more importantly, it enforces discipline. There is no panic selling from inside a position whose worst case was chosen in advance, which is exactly the quality that matters most for investors living off their portfolios.

If your position is up significantly, it makes sense to take a portion and collar it. You are not selling. You are not panicking. You are saying: I want to keep participating, and I refuse to hand back a large piece of what I have already earned. You did the hard part, getting in early and sitting through the volatility. Now preserve the win, on terms you wrote down in advance.

Probabilities over predictions,

Andy Crowder

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