What a SOFI straddle actually costs

$16.31SoFi Technologies, Inc. Common Stock · chain snapshot captured Aug 1, 2026

A low-priced, high-IV name where a single contract controls a small notional — which makes it one of the few liquid underlyings where a small account can actually run a covered-call or wheel program in round lots.

Buying the Aug 28 $16.5 call and put together on SOFI costs $181. That is the market's price for 27 days of movement in either direction, and it is the cleanest read on what 50% implied vol actually means: SOFI has to close beyond $14.69 or $18.31 — a 11.1% move — before you make a cent.

The trade, priced from the chain

27d to August 28, 2026

Leg	Qty	Price	Δ	IV	Cash
BuyAug 28 $16.5 call	1	$0.85	0.49	54%	−$85
BuyAug 28 $16.5 put	1	$0.96	-0.53	46%	−$96

Net debit

$181

Max profit

Unlimited

Max loss

$181

Chance of profit

42%

Breakevens

$14.69 / $18.31

−9.9% / +12.3%

$13.42 – $19.58 price rangespot $16.31breakeven $14.69 · $18.31P/L at expiration

Open this long straddle in the builderLoads these exact legs and re-quotes them live. No account needed.

Every leg above is priced at the chain’s own quote — the identical number the builder will show you when you click through (last traded price), captured August 1, 2026 with a 15-minute delay. Only strikes whose print survives an implied-volatility check (within 20% of its own IV) and a no-arbitrage check across the ladder are priced here. Full methodology. Greeks, breakevens, max profit/loss and probability of profit are computed by OptionTracker’s engine at r = 4.2%. Educational analysis, not investment advice.

How a long straddle works

A straddle is a pure volatility position. Both legs sit at $16.5, so the structure starts delta-neutral: you have no directional opinion, only a view that the realized move will exceed the 11.1% the market is charging.

Max loss is the full $181 debit, suffered if SOFI pins exactly at $16.5 on August 28, 2026. Upside is unlimited above the call breakeven and very large below the put one — which is why the engine reports max profit as unlimited.

Theta is the enemy and it is brutal on an ATM straddle: both legs are pure extrinsic value, decaying every day, accelerating into expiry. The engine's 42% probability of profit reflects that — straddles are low-probability, high-payoff trades by construction.

Vega is the friend. Rising implied vol lifts both legs regardless of direction, which is why straddles are often bought weeks before earnings and sold into it rather than held through it.

When it makes sense

You expect a move materially bigger than 11.1% and you genuinely do not know the direction.
You want long vega ahead of an event, with the intention of exiting before the crush rather than through it.
You need a hedge with unbounded convexity and can accept losing the entire premium.
You know whether you intend to exit on the implied-vol ramp or on the realized move, because those are different trades with different exits.

Where the risk actually is

The classic straddle failure is being right and losing anyway: SOFI moves 4%, you needed 11.1%, and the IV crush after the event takes the rest. Buying a straddle the day before earnings is a bet on the size of the move exceeding what everyone else already priced.

Time is a fixed cost. Over 27 days the position bleeds theta continuously, and the bleed accelerates in the final two weeks. A straddle held to expiry with no move loses 100%.

The decay is relentless and it is front-loaded against you in exactly the window most retail traders hold. A long-vol position with no exit plan is a slow, fully-predictable loss.

Reading the SOFI chain

Cheap in dollars, expensive in vol points. A straddle costs little enough that position sizing is never the constraint, which is exactly how traders end up with far more vega than they intended across a dozen contracts.

SOFI's Aug 28 strikes are $0.5 apart near the money (3.07% of spot). That is a coarse ladder: one rung is a large fraction of the implied move, so precision on the short strike is an illusion. 49k contracts of open interest on Aug 28 is workable around the money and thin in the wings — width costs more here than the ladder suggests. 20 strikes on that expiry — 48% of the board — carry prints that agree with their own implied volatility and hold up across the ladder, and those are the strikes priced here. Adequate at the near strikes, thin beyond them; the bid-ask is a large fraction of the premium at every strike.

Skew is inverted: the 25-delta CALL implies 6.0% more vol than the put. That is the market pricing upside risk above downside risk — a squeeze, a takeover rumour, or a crowded short. Owning upside on an inverted skew means paying the expensive side of the surface, which is worth knowing before you buy the call. The term structure is in contango: the back month implies 2.2% more vol than the front. Calm now, uncertainty later — which rewards selling the front month and makes the back month an expensive thing to own outright.

At 50% ATM implied vol, the Aug 28 options are pricing a one-standard-deviation move of $2.22 over 27 days — roughly −13.6% to +13.6%, or $14.09 to $18.53. The implied move is the market's bid for the exact thing this structure is long. Buying it at fair value and hoping is not a strategy.

The specific way people lose money on SOFI: Ignoring costs. A $0.02 slip on a $0.15 credit is thirteen percent of the trade, and no delta table shows you that.

Picking the strike on SOFI

A straddle is by definition ATM, so the choices are expiry and whether to widen into a strangle. Deltas on SOFI at $16.31:

Band	What it means	When it fits
ATM (0.50 Δ call + −0.50 Δ put)	The textbook straddle	Maximum vega and gamma per dollar; also maximum theta. The construction quoted above.On SOFI: the Aug 28 $16.5 put at $0.96, 80% annualized
Nearest listed strike	Rarely exactly 0.50 Δ	On SOFI the closest strike to $16.31 is $16.5 — a small directional lean is unavoidable.
Widen to a strangle	Cheaper, needs a bigger move	Lower debit, worse breakevens. Compare both before committing.
Longer expiry	More vega, slower decay	If the thesis is vol expansion rather than a dated event, buy time.

The Aug 28 call chain below shows how quickly extrinsic value falls away from the money — that curve is exactly what you are paying for when you buy both sides at the same strike.

The premium varies 13.0× across the nine strikes below. Everything the delta table is trying to tell you is visible in that gradient. Open interest concentrates at $15 on this expiry, which is usually where the fills are cleanest.

SOFI 2026-08-28 puts around the money: strike, distance from spot, mid price, delta, implied volatility and open interest.
Strike	vs spot	Mid	Δ	IV	% of spot	Ann.	OI
$14.5	−11.1%	$0.25	-0.19	51%	1.5%	21%	2.0k
$15	−8.0%	$0.36	-0.25	49%	2.2%	30%	3.1k
$15.5	−5.0%	$0.52	-0.34	48%	3.2%	43%	1.1k
$16	−1.9%	$0.70	-0.43	48%	4.3%	58%	1.8k
$16.5used	+1.2%	$0.96	-0.53	46%	5.9%	80%	1.9k
$17	+4.2%	$1.25	-0.62	49%	7.7%	104%	680
$18	+10.4%	$1.96	-0.83	39%	12.0%	162%	474
$19	+16.5%	$2.78	—	—	17.0%	230%	117
$19.5	+19.6%	$3.25	—	—	19.9%	269%	946

SOFI puts expiring August 28, 2026· 15-min delayed capture · “Ann.” annualizes the mid as a percentage of spot over 27 days.

Managing the position

Sell into vol expansion, not after it. The best straddle exits are on the IV spike, not the day the news lands.
Do not hold ATM straddles into the last week without a reason. Theta there is the steepest part of the curve.
Enter long vol before the crowd and exit into the bid. The reliable money in owning volatility comes from the ramp in implied vol, not from the realized move after it.
Never plan to hold an ATM long-vol position through the last week. Theta on the final stretch is the steepest part of the curve and it does not care about your thesis.

Common mistakes

Buying the straddle the day before the event

Everyone knows the event is coming, so IV already prices it. The $181 you pay is the consensus estimate of the move; you need to beat it, not match it.

Sizing it like a stock position

Straddles lose 100% routinely. Position size should assume the debit goes to zero.

Sizing a long-vol position like an equity position

These structures lose 100% routinely and by design. The size should assume the debit goes to zero, because over a long enough sample it repeatedly does.

SOFI long straddle FAQ

How big a move does the SOFI straddle need?

11.1% in either direction by August 28, 2026 — breakevens sit at $14.69 and $18.31. That is the implied move the 50% IV is quoting for 27 days.

Straddle or strangle on SOFI?

The straddle costs more and has closer breakevens; the strangle is cheaper and needs a bigger move. Price both — the strangle page on this site prices the same expiry — and pick the one whose breakevens match your actual expectation.

How much is SOFI expected to move by Aug 28?

The Aug 28 options imply a one-standard-deviation move of $2.22 — about 13.6% of the SOFI share price — over the 27 days to expiry. That is the market's estimate, not a forecast: roughly a third of the time the actual move is larger.

How wide are SOFI option strikes?

About $0.5 apart near the money on the Aug 28 expiry — 3.07% of the share price per rung. That sets how precisely you can place a short strike, and how granular a spread's width can be.

Build it yourself

Everything above is one construction at one moment. Open it in the builder to drag strikes along the ladder, scrub the expiry, and watch max profit, breakevens and probability of profit recompute live against the real SOFI chain — free, no account.

Open the SOFI long straddle All 50+ strategies on SOFI