Vanguard S&P 500 ETF · ARCX · ETF · 131 sessions on record
$700.86▼ −1.60 · −0.2%from $702.46 the session before · Sep 30, 2026 close · end of day
Open
$704.58
High
$707.20
Low
$700.56
Day's range
$6.60.95% of the previous close
VWAP
$703.43close −0.36% from it
Volume, shares
9.88M1.04× the 20-session average
Traded, $
$6.95B
Trades
325K30 shares per trade
Previous close
$702.46−1.60 to the close
Market cap
—
Day range5% of the way up
$700.56$707.20
52-week range89% of the way up
$578.46 Mar 30$716.39 Aug 13
−2.2% from the high · +21% from the low
The desk read · Sep 30expiry Oct 16 · 16 days
balanced
options read
calls 57% · puts 43% of OI
0.75
puts per call, by OI
Oct 16 expiry 1.28
$700.00
max pain
−0.12% from the close
$635.00
most call OI
1.11K contracts · −9.4% from the close
▲ +7.4%
option OI on the day
+8.09K contracts · 117K open
Balanced into a 16-day expiry: 0.75 puts per call by open interest, option OI +7.4% on the day, the most call OI sits at $635.00, the most put OI at $700.00, max pain $700.00.
Options
Sep 30 open interest · 15 expiries listed
VOO options carry 117K contracts of open interest across 15 expiries, 15% of it in the Oct 16 contract, with 0.75 puts per call.
Open interest by expirythe next 8 of 15 expiries · share of all open interest
Option open interest by expiry, the next 8 expiries
Expiry
Call OI · on the day
Put OI · on the day
Puts per call
Share of OI %
Strikes
Oct 22 days
4.67K+441
2.24K+34
0.48
5.9
88
Oct 99 days
1.78K+37
1.51K+20
0.85
2.8
79
Oct 1616 days
7.79K−11
9.96K−5
1.28
15
107
Oct 2323 days
1.86K+6
998+4
0.54
2.5
79
Oct 3030 days
6.17K+65
7.71K+23
1.25
12
77
Nov 637 days
197−2
306+6
1.55
0.43
75
Nov 2051 days
1.73K+77
1.04K+31
0.60
2.4
61
Dec 1879 days
1.09K+17
746+34
0.68
1.6
62
76% of open interest sits beyond the Oct 16 contract · 107 strikes listed for it · 117K contracts open in all
Monthly contractOct 16 expiry · 16 days
The Oct 16 contract holds 7.79K calls and 9.96K puts, the most call OI at $635.00 and the most put OI at $700.00; max pain $700.00, −0.12% from the close.
Call OI, contracts
7.79K−11 on the day
Put OI, contracts
9.96K−5 on the day
Puts per call, by OI
1.28all expiries 0.75
Max pain
$700.00−0.12% from the close
Strikes listed
107for this expiry
Open interest by strike, contractstop three strikes each side
Calls
Strike
Puts
698
$710.00
$700.00
4.82K
$680.00
317
$660.00
239
1.11K
$635.00
751
$630.00
Open interest added on the day, contractsthree largest additions each side
Calls
Strike
Puts
+5
$725.00
+5
$720.00
+8
$715.00
$692.50
+3
$690.00
+3
$685.00
+9
Close $ · S&P 500 rebased to the first close126 sessions to Sep 30 · axis fixed at 4 × ATR-14 around the last close · hover or tap a session and the read beside the chart follows it
OI Charts is not a registered investment adviser or broker-dealer. Prices, filings and open interest are public data and arithmetic on it, not a basis for any investment decision.