Hang Seng Hong Kong & US Tech Index to Include SpaceX, Effective June 29
Miles Bennett
Hang Seng Indexes Company will add SpaceX to the US constituent list of the Hang Seng Tech Index, effective June 29. The Magnificent 7 becomes eight, and the US sleeve will be rebalanced to equal weight.
How did SpaceX get into this index?
SpaceX listed on June 12 (ticker SPCX.O), triggering a conditional arrangement Hang Seng Indexes had pre-announced on May 27 — "if SpaceX lists successfully, it enters the index."
The new constituent takes effect on the 11th trading day after listing (June 29), expanding US constituents from seven to eight.
This means → the inclusion was not a snap decision; it was a pre-set mechanism that fired automatically once the IPO closed.
How will the weighting change — and what does it mean for the Mag 7?
After the close on June 23 (the 7th trading day post-listing), all eight US constituents will be rebalanced to equal weight.
The index caps its total US constituent weight at 35%; after rebalancing, each US stock's share converges to roughly the same level.
In plain terms = the Magnificent 7 each held one slice; now SpaceX joins the table, so every slice gets a little thinner — but the total pie (the 35% cap) stays the same size.
Why haven't other major indexes moved as fast?
FTSE Russell: shortened its fast-track IPO window to just 5 trading days — the fastest mover.
Nasdaq Global Indexes: require 15 trading days post-listing plus additional criteria before considering inclusion.
S&P Dow Jones Indices: maintain a 12-month seasoning period with strict profitability and float requirements — SpaceX is unlikely to enter the S&P 500 any time soon.
This means → inclusion timelines vary widely: Hang Seng picked a middle speed — far quicker than S&P, but less aggressive than FTSE.
Content is for reference only, not financial advice.