ASX 200: a 3.0σ rise on 27 July 2026

Recorded 28 October 2026

On 27 July 2026 ASX 200 rose 1.39% close to close, 3.0 times its typical daily move of 0.46% over the 20 sessions before it: larger than every one of the 2 sessions on record before it. 30 other instruments of the 200 measured that day moved 2σ or more.

The day

Daily closes, as recorded the night after

Move: +1.39%
Size: +3.0σ
Typical day before it: 0.46%
Close: 8,894
Previous close, 24 July 2026: 8,772.3
Since, to 6 November 2026: +1.43%

ASX 200, the 18 sessions to 27 July 2026

Daily closes; the last point is the quake

Show values

ASX 200, the 18 sessions to 27 July 2026
Point	ASX200
1 Jul 2026	8,723
2 Jul 2026	8,725
3 Jul 2026	8,844
6 Jul 2026	8,831
7 Jul 2026	8,804
8 Jul 2026	8,785
9 Jul 2026	8,763
10 Jul 2026	8,806
13 Jul 2026	8,809
14 Jul 2026	8,809
15 Jul 2026	8,841
16 Jul 2026	8,841
17 Jul 2026	8,797
20 Jul 2026	8,791
21 Jul 2026	8,793
22 Jul 2026	8,823
23 Jul 2026	8,839
24 Jul 2026	8,772
27 Jul 2026	8,894

The same day

Other quakes on 27 July 2026

Instrument	Move	Size
Cosmos ATOM	−6.95%	−4.9σ
Algorand ALGO	−5.63%	−3.6σ
Polkadot DOT	−8.31%	−3.6σ
Optimism OP	−8.34%	−3.3σ
Immutable IMX	−7.50%	−3.1σ
NEAR Protocol NEAR	−8.30%	−3.0σ
TRON TRX	−2.18%	−3.0σ
Stellar XLM	−5.80%	−3.0σ

ASX 200's other quakes

On record, newest first

4 November 2026: +2.61%, +5.2σ
1 October 2026: −1.99%, −3.6σ

How it is measured

The move is the close-to-close return; its size is that return divided by the standard deviation of ASX 200's previous 20 daily returns. A quake is 3σ or more. This record was made the night after the day finished trading and has not been changed since. The live chart is on ASX 200's page; the last few months of every market's daily moves are on the volatility terrain, and every quake on record is in the quake archive.