Index Reconstitution Radar Starter+

Who's next into the S&P 500 — and who's drifting toward the exit. Every non-member in the universe is scored against the published S&P eligibility criteria (market-cap floor, GAAP profitability, 12-month IPO seasoning), because an index addition is not punditry: when a stock joins, every fund tracking the index must buy it. This board sizes that forced bid before it happens.

Cap floor $22.7B Criteria vintage — Members resolved — Data as of — S&P reviews the floor quarterly
🧪 Scenario lab Move an assumption and every map, bar and table below re-scores live with the published formula. Nothing is stored — it's a what-if, and the link carries it.

🛰️ The reconstitution map

Every candidate as one bubble: horizontal position is size vs the door (the cap floor, log scale), height is readiness score, bubble area is market cap. Shaded hulls mark each cluster's territory, ✦ its centroid. Click a cluster card or chip to focus, double-click to solo, drag to pan, scroll to zoom — and click a bubble to open its inspector — checklist, distance to the door, and a rally slider for that one name.

Clusters Sector Min score 0 showing — of — candidates
◉ bubble = one candidate (area = market cap) ✦ = cluster centroid shaded hull = cluster territory dashed hollow = unverified (data, not verdict) vertical line = the $-floor door

🧬 What's inside the score

The readiness score decomposed for the top filtered names — cap headroom, earnings, seasoning, momentum, and size-rank stack to the total. A short bar isn't a verdict; hover each segment to see which criterion is doing the lifting.

🎯 Addition candidates —

Non-members ranked by readiness. Checklist: Cap floor · Earnings (TTM GAAP) · Seasoning (12 mo listed). ◌ = not verifiable from current data — never assumed.

Forced passive bid assumes $10.0T tracking the index — set in the Scenario lab above.

Click a column title to sort it; the funnel beside it filters that column. Filters compose with the chips and the search box above.

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⏳ Seasoning clock —

Over the cap floor already, blocked only by the 12-month seasoning rule — the timeline plots the date each becomes eligible. This is where mega-IPOs queue up for the index.

📉 Deletion watch —

The index's smallest members. The cap floor formally gates additions — a member below it isn't auto-removed — but committee deletions historically come from this tail.

TickerMkt cap% of floor20d momSignalSector

🚫 Big, but ineligible —

Giants that top naive "next into the index" screens but structurally can't be added — foreign-domiciled issuers and limited partnerships. Knowing who can't get in is half the edge.

TickerMkt capWhy ineligible
Methodologyscoring weights, cluster rules, and the limits

Readiness scores are deterministic and auditable: market-cap headroom vs the published floor (45%), TTM GAAP profitability (25%), 12-month seasoning (10%), 20-day momentum (10%), and size rank vs current members (10%) — the decomposition chart shows exactly these parts. Clusters are rule-based, in precedence order: an earnings fail is Earnings gap, below the floor is Approaching, all-criteria pass is Ready now, and anything blocked only by unverifiable data is Unverified. The cap floor ($22.7B, criteria vintage —) is S&P's published unadjusted-company threshold, reviewed quarterly by S&P DJI.

What this model does not evaluate

Domicile and partnership screens are curated; names with a genuinely uncertain S&P domicile or float determination stay on the board with an review badge rather than being silently dropped. "Weight if added" uses unadjusted company caps as a proxy for float-adjusted index weight. Membership refreshes quarterly; fundamentals sweep continuously.

FAQ — Index Reconstitution Radar

What is the Index Reconstitution Radar?

A forecaster for S&P 500 additions and deletions. Every non-member in the QuantLogix universe is scored against the published eligibility criteria — the market-cap floor ($22.7B, criteria vintage 2026-04), positive TTM GAAP earnings, and 12-month IPO seasoning — and plotted on a cluster map with the forced passive buying an addition would trigger.

Is it a prediction of what the S&P Index Committee will do?

No. It is a deterministic readiness model over the published criteria — cap headroom, earnings, seasoning, momentum and size rank, each disclosed in the score anatomy. The committee weighs factors the model does not evaluate, and the methodology lists them.

What does the Scenario lab do?

It re-scores the whole board client-side under a what-if cap floor, a uniform market shock, and a tracked-AUM assumption, using the same published formula, and names who crosses the door or falls back. Scenarios are URL-linkable and nothing is stored.

Who can use it?

The full board, score anatomy, deletion watch and forced-bid math are a Pro feature; everyone sees a real top-ten slice of today's board.