What are the market numbers of the day?
Data through 2026-10-16 · updated after each US close · free to read · by Daniel, The Philosopher Investor
On 2026-10-16, MU had the most options premium traded of any US company, $1.8B, with 40% of it in calls. Among the ten US companies with the most options premium on 2026-10-16, 2 leaned to calls and 2 to puts. At the 2026-10-16 close, SPY sat at 771.79, between a put wall at 750 and a call wall at 800.
What happened in the US market on 2026-10-16?
- On 2026-10-16, MU had the most options premium traded of any US company, $1.8B, with 40% of it in calls.
- Among the ten US companies with the most options premium on 2026-10-16, 2 leaned to calls and 2 to puts.
- At the 2026-10-16 close, SPY sat at 771.79, between a put wall at 750 and a call wall at 800.
- On 2026-10-16, dealers were in negative gamma on SPY, which amplifies moves.
- On 2026-10-16, 70% of 424 US option books with a readable sign were in positive dealer gamma.
- On 2026-10-16, 1,711 US stocks closed up and 3,629 closed down.
- On 2026-10-16, 124 US stocks made a new 52-week high and 234 a new 52-week low.
- The latest House stock disclosures on file run to 2026-10-15: 15 filings from 13 members covering 221 trades.
Cite as: The Philosopher Investor, Market numbers of the day, 2026-10-16, https://thephilosopherinvestor.com/data/today. Each line is one dated fact from the latest complete US session, so it stays true when quoted on its own. This address is stable; the numbers move after each close.
Common questions
Where do these numbers come from?
From the same nightly pass that builds the free data pages: options exchange tape for premium, open interest by strike for the gamma walls, the full US listing for breadth, and House filings for Congress trades. Each line is one fact from the latest complete US session.
Can I quote a line from this page?
Yes. Each sentence carries its own date so it stays true when quoted alone. Cite The Philosopher Investor and the date; the page address does not change.
Is this real time?
No. The page is rebuilt after each US close, so the numbers describe the latest complete session. During the trading day they describe yesterday.
What is not on this page?
Anything that is a judgment: which names rank, the trade plans, the levels the desk picks. Those stay with the members. This page is facts only.
How many stocks closed up and down yesterday?
The advancers and decliners line above gives the count for the latest complete session, across the full US listing.
What is the biggest options trade of the day?
The first line names the US company with the most options premium traded in the latest session and how much of it went into calls. The full top ten sits on the options flow page.
Where are the SPY call wall and put wall today?
In the gamma lines above, with the close between them and the dealer gamma regime. The gamma page has the same map for QQQ and IWM.
How do I get these numbers every day?
This page rebuilds after each close at the same address. The weekly newsletter carries the numbers that mattered most, with the reasoning.