SPX vs SPY Options: Which One to Trade
SPX vs SPY options compared on contract size, settlement, early assignment and the 60/40 tax split, with the notional and tax math computed from data.
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SPY Dividend Yield: Why It Trails the Index
SPY's dividend yield sits a few basis points under VOO and IVV. Here is the unit investment trust mechanism behind the gap, measured on live fund data.
Market Recap: July 30, 2026, The Day in Numbers
July 30, 2026, measured from the tape: index scoreboard, breadth, sector spread, options flow, the quote tape, rates and calendar, every figure query-backed.
Market Recap: July 28, 2026, The Day in Numbers
July 28, 2026, measured from the tape: index scoreboard, breadth, sector spread, options flow, the quote tape, rates and calendar, every figure query-backed.
Market Recap: July 27, 2026, The Day in Numbers
July 27, 2026, measured from the tape: scoreboard, breadth, sector spread, options flow, the quote tape, rates and the calendar, every figure query-backed.
Market Recap: July 29, 2026, The Day in Numbers
July 29, 2026, measured from the tape: index scoreboard, breadth, sector spread, options flow, the quote tape, rates and calendar, every figure query-backed.
Market Recap: Week of July 20, 2026
The week after July's monthly options expiration, measured: the index scoreboard, sector dispersion, weekly breadth, and where the tape's dollars went.
SPY Implied Volatility: IV Now & Its History
SPY implied volatility from real option prices: every session of the last 90 days, the monthly history since 2022 vs SPY and QQQ, and the term structure.
Does Dollar-Cost Averaging Work?
Does dollar-cost averaging work? A data study of $500 a month into SPY versus one lump sum from 2016 to 2026, and what averaging in is really for.
The 2011 US Downgrade: Black Monday's Tape
August 8, 2011: the first trading day after S&P stripped the US of its AAA rating. The tape fell all day and closed near the low, with the receipts inside.
March 9, 2009: The Bottom, On the Tape
March 9, 2009 was the exact bottom of the financial crisis, and the tape shows a quiet, unremarkable Monday. What generational lows actually look like up close.
Lehman's Collapse: The 2008 Tape, Replayed
September 15, 2008: Lehman filed and SPY closed on its low. LEH's eighteen-month death spiral, the whipsaw week, and the full crash, panel by panel.
The 2010 Flash Crash, Minute by Minute
May 6, 2010: about a trillion dollars of market value vanished and mostly returned inside 36 minutes. The minute tape of the flash crash, receipted.
March 24, 2020: The Day the Market Turned
March 24, 2020, replayed from the minute tape: the crash and the dash for cash, the Fed package that differed, sector breadth, and the retest that never came.
COVID Crash 2020: Four Halts, Peak to Trough
The COVID crash of 2020, receipted: the March 9 halt minutes missing from the tape, four circuit breakers in eight days, and the peak-to-trough map on SPY.
Market Recap: Week of July 6, 2026
A chip rout, a bounce, the summer's wildest open, and NVDA's Friday, netting out to a quiet index week where most stocks fell and MU out-traded SPY itself.
Market Recap: July 10, 2026, The Day in Numbers
NVDA woke up and led the whole tape a day after sitting out. META doubled down, MU cooled, small caps slipped, and the index barely moved. Friday in numbers.
Market Recap: July 9, 2026, The Day in Numbers
Chip equipment gapped up hard and faded, mega-caps gapped down and ripped back, the tape flipped decisively green, and NVDA sat it out, closing red.
Market Recap: July 8, 2026, The Day in Numbers
A one-day chip bounce the index barely felt: most semis green, NVDA up a second day, MU the heaviest dollar name, and a broad tape more than two-to-one red.
Market Recap: July 7, 2026, The Day in Numbers
A semiconductor break the index barely felt: chips down hard, NVDA green through it, a two-to-one red tape, and SPY quoting its tightest spread in a month.
Market Recap: July 6, 2026, The Day in Numbers
Back from the Independence Day break: a growth-led gap up, a sector split several times the index move, a reverse-split wall, the month's tightest quotes.
Microstructure Deep-Dive: June 29, 2026
Under the hood of June 29, 2026: the full trade and quote tape, a dictionary-derived volume correction, nanosecond receipts, and a truncated FINRA file.
Market Recap: July 2, 2026, The Day in Numbers
Holiday-eve rotation: green breadth under a falling Nasdaq, tech last of the eleven sector funds, memory-rout day two, and the split that faked a crash.
Market Recap: July 1, 2026, The Day in Numbers
The second half opened quiet at the index and violent underneath: the memory complex broke, META jumped, and most S&P sectors still closed green.
Market Recap: June 30, 2026, The Day in Numbers
The quarter's last session in numbers: a technology-led index gain over a mostly red tape, the memory complex on top, and a same-day options tape at the close.
Market Recap: June 29, 2026, The Day in Numbers
June 29, 2026 in numbers: a growth-led index gain, a four-point sector spread, a memory-stock round trip, the 0DTE tape, penny-tight quotes and rates.