
The LBXpro 25 Index equally weights the 25 most active, late-stage, venture-backed private companies, chosen based on their implied valuations in secondary-market trading.
Inception Date: April 1, 2024
Base Currency: USD
Index Base Value (I₀): 1,000 points
Weighting Scheme: Equal weight—each of the N = 25 constituents carries a weight of 1/N
Rebalance Frequency: Quarterly
Each quarter, the LBXpro 25 Index is reconstituted based on company activity and valuation. The selection process follows two main steps:
1. Top 20 by Activity (Valuation ≥ $1B). We first generate an Activity Ranking. The top 20 companies in this ranking are eligible for inclusion if their implied valuation is at least $1 billion as of the rebalancing date.
2. Top 5 by Valuation among remaining active companies. To complete the index, we select 5 additional companies from the pool of active but not-yet-included names. These are chosen based on the highest implied valuation, ensuring that companies with strong secondary market value but slightly lower activity still have a path to inclusion.
Initial Share Allocation (at t₀):
Per-Stock Dollar Allocation: A₀ = I₀ ÷ N = 1,000 ÷ 25 = $40 per “notional” share basket
Notional Share Count: \ sᵢ₀ = A₀ ÷ Pᵢ₀
where Pᵢ₀ is the Launchbay price of stock i at base date
Index Level at Later Dates (t):
Holding sᵢ₀ constant until next rebalance, mark-to-market: Iₜ = ∑ᵢ₌₁ⁿ ( sᵢ₀ × Pᵢₜ )
At each quarter-end rebalance (tʳ):
Pre-Rebalance Index Level: Iₜʳ₋ = ∑ᵢ₌₁ⁿ ( sᵢₜʳ₋₁ × Pᵢₜʳ₋ )
New Allocation per Constituent: Aₜʳ = Iₜʳ₋ ÷ N
Updated Share Counts: sᵢₜʳ = Aₜʳ ÷ Pᵢₜʳ
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