State Street SPDR S&P Biotech ETF · ARCX · ETF · 131 sessions on record
$157.68▲ +0.87 · +0.6%from $156.81 the session before · Sep 30, 2026 close · end of day
Open
$157.84
High
$159.98
Low
$156.48
Day's range
$3.52.2% of the previous close
VWAP
$158.34close −0.41% from it
Volume, shares
6.87M0.80× the 20-session average
Traded, $
$1.09B
Trades
79K87 shares per trade
Previous close
$156.81+0.87 to the close
Market cap
—
Day range34% of the way up
$156.48$159.98
52-week range76% of the way up
$118.28 Mar 30$169.89 Aug 25
−7.2% from the high · +33% from the low
The desk read · Sep 30expiry Oct 16 · 16 days
balanced
options read
calls 44% · puts 56% of OI
1.30
puts per call, by OI
Oct 16 expiry 1.97
$162.00
max pain
+2.7% from the close
$200.00
most call OI
8.84K contracts · +27% from the close
▼ −0.5%
option OI on the day
−2.99K contracts · 592K open
Balanced into a 16-day expiry: 1.30 puts per call by open interest, option OI −0.5% on the day, the most call OI sits at $200.00, the most put OI at $150.00, max pain $162.00.
Options
Sep 30 open interest · 15 expiries listed
XBI options carry 592K contracts of open interest across 15 expiries, 20% of it in the Oct 16 contract, with 1.30 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
13K+685
27.6K−5.87K
2.13
6.9
69
Oct 99 days
1.07K+37
3.77K−176
3.51
0.82
67
Oct 1616 days
39.5K+546
77.7K+597
1.97
20
66
Oct 2323 days
668+22
1.99K+513
2.98
0.45
65
Oct 3030 days
1.8K+111
2.87K+10
1.60
0.79
58
Nov 637 days
270+203
42+9
0.16
0.05
56
Nov 2051 days
3.25K+147
9.9K+853
3.05
2.2
67
Dec 1879 days
85.1K−37
89.9K−770
1.06
30
108
73% of open interest sits beyond the Oct 16 contract · 66 strikes listed for it · 592K contracts open in all
Monthly contractOct 16 expiry · 16 days
The Oct 16 contract holds 39.5K calls and 77.7K puts, the most call OI at $200.00 and the most put OI at $150.00; max pain $162.00, +2.7% from the close.
Call OI, contracts
39.5K+546 on the day
Put OI, contracts
77.7K+597 on the day
Puts per call, by OI
1.97all expiries 1.30
Max pain
$162.00+2.7% from the close
Strikes listed
66for this expiry
Open interest by strike, contractstop three strikes each side
Calls
Strike
Puts
8.84K
$200.00
6.27K
$185.00
4.52K
$170.00
$153.00
6.07K
$150.00
22.5K
$135.00
5.37K
Open interest added on the day, contractsthree largest additions each side
Calls
Strike
Puts
+156
$163.00
+93
$160.00
$158.00
+68
+134
$155.00
$151.00
+849
$143.00
+138
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.