Market · 30 June 2026
Bourbon Barrel Index
Dollars per barrel, by age. A fresh fill marks at $525. An eight-year barrel marks at $1,365.
New fill
$525
Four years
$945
Eight years
$1,365
Age curve
The latest mark. Age in years, price in dollars per barrel.
| Age | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|---|
| $ / barrel | $525 | $630 | $735 | $840 | $945 | $1,050 | $1,155 | $1,260 | $1,365 |
Each year of age on this mark is $105. A new fill is $525. Age 8 is $1,365.
Age and mash
The curve above is one price per year of age. The 47 barrels marked on 31 December 2025 also move with the mash. A reading of those marks splits each price into an age piece and four grain pieces. A typical miss is $62. This reading is not the published curve.
- Age · $191 / yr
- Corn · $5 a point
- Rye · $6 a point
- Wheat · $6 a point
- Barley · $16 a point
Fair value = years × $191 + corn’s share of $477 + rye’s share of $581 + wheat’s share of $609 + barley’s share of $1,606.
Castle & Key · 5 yr 4 mo · 75c 13r 12b
- Age$191 a year$1,019
- Corn$477 if it were all corn$358
- Rye$581 if it were all rye$76
- Barley$1,606 if it were all barley$193
Reading · mark $1,645$1,645
Barley is only a few points in these mashes, so its full-barrel figure is the least steady. The published index stays $105 a year, from $525.
From the 2023 peak
Two anchors. June 2023 is the peak. 30 June 2026 is the latest mark. Older barrels fell further.
- Age 0
- Age 4
- Age 8
-47.5%
Age 0 vs 2023 peak
$1,000 to $525. Published peak.
-74.5%
Age 4 vs 2023 peak
$3,706 to $945. Implied by the published −74.5% and the $945 mark.
-79.3%
Age 8 vs 2023 peak
$6,610 to $1,365. Published peak, $6,610.
Age and mash
The curve above is one price per year of age. The 47 barrels marked on 31 December 2025 also move with the mash. A reading of those marks splits each price into an age piece and four grain pieces. A typical miss is $62. This reading is not the published curve.
- Age · $191 / yr
- Corn · $5 a point
- Rye · $6 a point
- Wheat · $6 a point
- Barley · $16 a point
Fair value = years × $191 + corn’s share of $477 + rye’s share of $581 + wheat’s share of $609 + barley’s share of $1,606.
Castle & Key · 5 yr 4 mo · 75c 13r 12b
- Age$191 a year$1,019
- Corn$477 if it were all corn$358
- Rye$581 if it were all rye$76
- Barley$1,606 if it were all barley$193
Reading · mark $1,645$1,645
Barley is only a few points in these mashes, so its full-barrel figure is the least steady. The published index stays $105 a year, from $525.
How the mark is made
Inventory
Real barrels, priced by age. Fill, mash, warehouse, and exit sit behind the number.
A panel
The mark is checked against more than one broker or distillery. One desk does not set it.
Twice a year
The curve from age 0 through 8 is re-marked on a semi-annual cadence.
Holdings stay off this page. What is published is the curve. This is the market mark for now, not a live feed from a single warehouse. It is a reference price. It is not a settlement price, and it is not advice. Barrel prices can fall.