How the indices are calculated:
Top1000 - take the top 1000 most expensive cards on any given day, then go one day forward and get their prices. The ratio between their newer and previous price is weighted by the previous price of the card. After all that the sum of the weighted ratios is multiplied by the previous day's index value.
On 5/19/2024, the cheapest card in the index (the 1000th most expensive card) was 5.32 TIX.
Next2000 - Same calculation, but using the 1001th most expensive card to the 3000th most expensive card.
On 5/19/2024, the cheapest card in the index (the 3000th most expensive card) was 1.96 TIX, for reference.
Cap150 - Similar to top1000, but with only cards costing <= 150 TIX.
On 5/19/2024, the cheapest card in the index was 5.26 TIX.
Boosters - A price weighted index of all boosters on MTGO
On 5/19/2024, the average booster on MTGO cost TIX.