Portfolio Duration (GB)
Bay Filly / April 17th, 2022 in GB / by Night of Thunder (IRE) out of Shemya (FR)
$604,800
2026 earnings
105
speed figure
67%
2026 wins
racing Record
2026 Stats
Career Stats
Loading
2
Firsts
3
1
Seconds
2
0
Thirds
0
0
Unplaced
0
3
Starts
5
$604,800
Earnings
$630,400
$201,600
Earnings / Start
$126,080
Loading
Bio
Portfolio Duration, an English-bred Night of Thunder filly, made her first three career starts at Tampa Bay Downs spanning over a year, racing twice at age 3 in 2025 with a runner-up finish and then a win with a long break in between and then returning in late March 2026 with an eye-catching 4 ¾-length score in a one-mile turf allowance race at the Florida track.
Portfolio Duration, an English-bred Night of Thunder filly, made her first three career starts at Tampa Bay Downs spanning over a year, racing twice at age 3 in 2025 with a runner-up finish and then a win with a long break in between and then returning in late March 2026 with an eye-catching 4 ¾-length score in a one-mile turf allowance race at the Florida track.
The bay filly then was moved up to test graded stakes company by trainer Chad Brown and rallied late in the one-mile Longines Distaff Turf Stakes May 2 at Churchill Downs only to come up short by a neck to pacesetter Classic Q.
She then returned in the Grade 1, 1 3/16-mile New York Stakes held June 5 at Saratoga during the Belmont Stakes Racing Festival. This time, Portfolio Duration took the initiatve and set an unhurried pace under Flavien Prat, and she had just enough stamina left to hold off a late bid by European invader Cankoura and win by a half-length.
Portfolio Duration is out of the winning Dansili mare Shemya and is a relative to U.S. Grade 3 winner No Show Sammy Jo.
