BIDU Stock Before Earnings: IV Ramps +55% Into the Print (Baidu Inc)

What happens to BIDU stock before earnings? Two things are measurable: Baidu Inc's next earnings date is not confirmed yet; its 10-year average earnings move is about ±7.4%; at-the-money implied volatility climbed +55% over the final five sessions before the print on average across Baidu Inc's last 8 reports (it rose into 8 of the 8), with the last day alone averaging +9%. That ramp is what an IV-rush trade tries to capture — and it collapses the moment the numbers are out (IV crush), which is why buying calls or puts the night before is usually a bet against the odds unless the move beats what was priced.

Avg move (10Y)

±7.4%

peak earnings-day move

Typical IV ramp

+55%

-5d → last close, avg of 8 reports

Last-day ramp

+9%

final session alone, average

BIDU live implied move & 10Y history → · BIDU stock after earnings → · Who is on the IV Rush Radar this week → · How the IV rush trade works →

How BIDU's implied volatility ramps into the print

The IV Rush Radar records at-the-money IV twice a day for the last five sessions before every Baidu Inc report. Its most recent release (May 18, 2026) looked like this — IV at each 4pm close, versus the -5d morning reading of 66%:

Session	ATM IV	vs -5d open
-5d 4pm	79%	+20%
-4d 4pm	82%	+25%
-3d 4pm	90%	+37%
-2d 4pm	80%	+22%
-1d 4pm	70%	+6%

Across all 8 tracked reports the five-session ramp averaged +55% and the last day alone +9%.

Report	IV at -5d	IV at last close	Ramp
May 18, 2026	66%	70%	+6%
Aug 20, 2025	▮▮%	▮▮▮%	+▮▮%
May 21, 2025	▮▮%	▮▮▮%	+▮▮%
Feb 18, 2025	▮▮%	▮▮▮%	+▮▮%

The other 7 Baidu Inc reports, side by side — and the live curve for the next one — are in the IV Rush Radar. This is the tool members use to trade the ramp before the crush: the historical median IV path for BIDU drawn against today's real-time IV, three snapshot signals (is IV rising now, is the projected straddle gain worth it, does BIDU usually rise on the last day), a projected straddle price into the close, and the platform's daily P1/P2/P3 rush picks. Ideal setups light all three signals green — and the radar tells you when to be out (always before the last close). See member plans →

Why "just buy calls before earnings" usually loses even when you're right

Everything the market expects is already in the premium: implied volatility peaks at the last close before the report and collapses the moment the numbers are out. A call bought the night before needs the stock to move more than the implied move in the right direction just to break even — a smaller-than-priced move loses money on both calls and puts. Our IV crush guide walks through the mechanics; the expected-move calculator turns a straddle price into the break-even you'd need.

Buying the BIDU straddle at the last close and holding through: 2 of 15 paid

The backtester replays a long ATM straddle entered at the last close before each of Baidu Inc's last 15 reports and marked at the reaction-day close — real contract prices, not theory. Long vol won 2 of 15; short vol is the mirror image.

Report	Straddle at entry	At reaction close	Long-vol P&L
May 18, 2026	$10.50	$7.60	-28%
Feb 26, 2026	$8.45	$8.48	+0%
Nov 18, 2025	$▮▮.▮▮	$▮▮.▮▮	▮▮%
Aug 20, 2025	$▮▮.▮▮	$▮▮.▮▮	▮▮%
May 21, 2025	$▮▮.▮▮	$▮▮.▮▮	▮▮%

Every one of the 15 instances — entry, open, midday and close prices for straddles, strangles, iron butterflies and condors — is in the Backtester, and the Simulator gives the likelihood of success and risk/reward for the exact position you'd put on for the next report. See member plans →

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Frequently asked questions

Should I buy BIDU before earnings?

That is a decision only you can make, and this page does not give advice. What the data says: options price a move of about ±7.4% on average, so a long call or put needs Baidu Inc to move more than that in the right direction to profit after IV crush. Implied volatility has climbed +55% on average over the final five sessions, which is why some traders trade the ramp itself and exit before the print.

Does BIDU implied volatility go up before earnings?

Usually. Across Baidu Inc's last 8 reports at-the-money IV rose into the print 8 times, averaging +55% from five sessions out to the last close, with the last day alone averaging +9%. Into its May 18, 2026 report IV went from 66% to 70%.

When does BIDU IV peak before earnings?

At the last close before the report — the final session before the print carries the biggest step for most names, which is why an IV-rush trade is exited before that close and never held through the announcement.

What is BIDU's implied move for the next earnings?

The next Baidu Inc report is not confirmed yet. Its 10-year average earnings move is about ±7.4%; the live implied move appears on the BIDU implied-move page as soon as the date is set.