# Magnitude (horse)
**Magnitude** (foaled 12 March 2022) is an American Thoroughbred racehorse, a bay colt by Not This Time out of Rockadelic, who won the 2026 [Dubai World Cup](https://www.edgepedia.org/dubai-world-cup) (G1) and the 2026 Stephen Foster Stakes (G1) and earlier announced himself with a 9 3/4-length victory in the 2025 Risen Star Stakes (G2).[1](https://www.horise.com/horse/magnitude/) • [2](https://www.twinspires.com/edge/racing/kentucky-derby/kentucky-derby-pedigree-profile-magnitude/) He is owned by Winchell Thoroughbreds LLC, trained by Steven M. Asmussen, and has been ridden in his major wins by Jose Ortiz.[3](https://www.twinspires.com/edge/horses/magnitude/)
| Key fact | Detail |
|---|---|
| Foaled | 12 March 2022, United States; bay colt[1](https://www.horise.com/horse/magnitude/) |
| Breeding | By Not This Time out of Rockadelic; bred in Kentucky by Ron Stolich[3](https://www.twinspires.com/edge/horses/magnitude/) |
| Connections | Owner Winchell Thoroughbreds LLC; trainer Steven M. Asmussen; regular jockey Jose Ortiz[3](https://www.twinspires.com/edge/horses/magnitude/) |
| Career record | 15 starts, 8 wins, 2 seconds, 1 third; career earnings $9,626,365[4](https://www.pedigreequery.com/magnitude15) |
| Breakthrough win | 2025 Risen Star Stakes (G2) at Fair Grounds by 9 3/4 lengths, with a top speed rating of 105[2](https://www.twinspires.com/edge/racing/kentucky-derby/kentucky-derby-pedigree-profile-magnitude/) • [5](https://www.kentuckyderby.com/horses/news/study-guide-2026-stephen-foster-stakes/) |
| Biggest victory | 2026 Dubai World Cup (G1) at Meydan, 28 March 2026, winning time 02:04.380, starting price 8.50[1](https://www.horise.com/horse/magnitude/) |
| Signature rivals | Finished third to Sovereignty in the 2025 Travers Stakes and second to Baeza in the Pennsylvania Derby, then beat both in 2026[5](https://www.kentuckyderby.com/horses/news/study-guide-2026-stephen-foster-stakes/) |
## Pedigree and background
Magnitude is by Not This Time, a sire whose sons and daughters were prominent on the [Kentucky Derby](https://www.edgepedia.org/kentucky-derby) trail in the mid-2020s, and his dam Rockadelic is a daughter of Bernardini.[3](https://www.twinspires.com/edge/horses/magnitude/) His dosage profile, a pedigree measure of speed-versus-stamina balance, is DP = 13-3-24-0-0 (40), with a Dosage Index of 2.33 and a Centre of Distribution of 0.73, figures that sit within the range generally associated with horses capable of classic distances.[4](https://www.pedigreequery.com/magnitude15) The TwinSpires pedigree profile written after the Risen Star described the colt as a serious [2025 Kentucky Derby](https://www.edgepedia.org/2025-kentucky-derby) contender on the strength of that win.[2](https://www.twinspires.com/edge/racing/kentucky-derby/kentucky-derby-pedigree-profile-magnitude/)
## Two-year-old season, 2024
Magnitude took his maiden special weight by 5 3/4 lengths in July 2024 and added a [Churchill Downs](https://www.edgepedia.org/churchill-downs) allowance race in November, but he appeared exposed against stronger opposition: he finished seventh in the 2024 Iroquois Stakes (G3) and then went down by 6 3/4 lengths when second to Built in a December stakes race.[6](https://cdn.bloodhorse.com/daily-app/pdfs/BloodHorseDaily-20250220.pdf?c=1225320554)
## Three-year-old season, 2025
**The Risen Star.** In February 2025, sent from the outside post in a 12-horse field, Magnitude was pushed to the front by jockey Ben Curtis and drew away to a 9 3/4-length win in the Risen Star Stakes (G2) at Fair Grounds, a result America's Best Racing called both a massive upset and a monster performance.[2](https://www.twinspires.com/edge/racing/kentucky-derby/kentucky-derby-pedigree-profile-magnitude/) • [7](https://www.americasbestracing.net/the-sport/2025-2025-kentucky-derby-prospect-profiles-risen-star-stakes-winner-magnitude) The Kentucky Derby study guide credits the race with his top speed rating of 105.[5](https://www.kentuckyderby.com/horses/news/study-guide-2026-stephen-foster-stakes/)
**Summer and fall.** Magnitude earned a career-best 111 Equibase Speed Figure in the Iowa Derby and entered the [Travers Stakes](https://www.edgepedia.org/travers-stakes) at Saratoga having won his previous two races by a combined 19 lengths, making him the biggest listed challenge to Kentucky Derby and Belmont winner [Sovereignty](https://www.edgepedia.org/sovereignty) in the Midsummer Derby.[8](https://paulickreport.com/horseplayers/equibase-analysis-sovereignty-poised-to-dominate-midsummer-derby) He finished third to Sovereignty in the Travers, then ran second to Baeza in the Pennsylvania Derby at [Parx Racing](https://www.edgepedia.org/parx-casino-and-racing) on 20 September 2025, going off at odds of 11 and finishing 2 1/4 lengths behind the winner.[5](https://www.kentuckyderby.com/horses/news/study-guide-2026-stephen-foster-stakes/) • [3](https://www.twinspires.com/edge/horses/magnitude/) He ended the year by defeating older horses in the Clark Stakes (G2) at Churchill Downs on 28 November 2025, winning at odds of 2 after stalking and dueling in the stretch.[5](https://www.kentuckyderby.com/horses/news/study-guide-2026-stephen-foster-stakes/) • [3](https://www.twinspires.com/edge/horses/magnitude/)
## Four-year-old season, 2026
Magnitude began 2026 with two wins. In the Razorback Handicap (G3) at Oaklawn Park on 28 February or 1 March 2026, he pressed the pace, dueled into the lane, wore down the pacesetter past the furlong marker, and drew clear by 3 3/4 lengths at odds of 1.80.[1](https://www.horise.com/horse/magnitude/) • [3](https://www.twinspires.com/edge/horses/magnitude/)
**Dubai World Cup.** On 28 March 2026 at [Meydan Racecourse](https://www.edgepedia.org/meydan-racecourse), Magnitude started from barrier 1 at 8.50 and won the $12,000,000 Dubai World Cup (G1) over 2,012 meters on dirt, his biggest victory, in a time of 02:04.380, beating the Japanese star [Forever Young](https://www.edgepedia.org/forever-young-horse) by 0.75 lengths, with Meydaan 2.75 lengths back in third.[1](https://www.horise.com/horse/magnitude/) The Kentucky Derby study guide described the result as conquering the international superstar Forever Young.[5](https://www.kentuckyderby.com/horses/news/study-guide-2026-stephen-foster-stakes/)
**Stephen Foster and the Whitney.** At Churchill Downs on 28 June 2026, Magnitude won the Stephen Foster Stakes (G1) over 1,811 meters in 01:48.030, holding off Baeza by 1.25 lengths with Sovereignty a further 4 lengths back in third, at odds of 4.33.[1](https://www.horise.com/horse/magnitude/) In the Whitney Stakes at Saratoga on 9 August 2026 he finished sixth of seven, beaten 15.35 lengths, as Sovereignty won; bettors and commentators attributed the defeat to the colt's poor record at Saratoga rather than a decline in form.[1](https://www.horise.com/horse/magnitude/)
## Racing style
Magnitude's major wins share a pattern of forward placement and sustained pressure. In the Risen Star he was sent straight to the front from a wide post.[7](https://www.americasbestracing.net/the-sport/2025-2025-kentucky-derby-prospect-profiles-risen-star-stakes-winner-magnitude) In the Razorback he pressed and then dueled the pacesetter before drawing clear under steady handling, and in the Clark he stalked in third, bid, dueled, and edged clear late.[1](https://www.horise.com/horse/magnitude/) • [3](https://www.twinspires.com/edge/horses/magnitude/) His Dubai World Cup win came from barrier 1 with the comment "in charge, held sway", a front-running trip over the 2,012-meter trip.[3](https://www.twinspires.com/edge/horses/magnitude/) Backing him throughout his career would have returned a 187 percent profit on investment, according to Horise's tally.[1](https://www.horise.com/horse/magnitude/)
## References
1. [Racehorse Magnitude – Form, Results & Pedigree, Horise](https://www.horise.com/horse/magnitude/)
2. [Kentucky Derby pedigree profile: Magnitude, TwinSpires Edge (J. Keeler Johnson)](https://www.twinspires.com/edge/racing/kentucky-derby/kentucky-derby-pedigree-profile-magnitude/)
3. [Magnitude (KY) – Horse Profile, TwinSpires](https://www.twinspires.com/edge/horses/magnitude/)
4. [Magnitude Horse Pedigree, Pedigree Query](https://www.pedigreequery.com/magnitude15)
5. [Study Guide: 2026 Stephen Foster Stakes, KentuckyDerby.com](https://www.kentuckyderby.com/horses/news/study-guide-2026-stephen-foster-stakes/)
6. [Pedigree Analysis, BloodHorse Daily, 20 February 2025](https://cdn.bloodhorse.com/daily-app/pdfs/BloodHorseDaily-20250220.pdf?c=1225320554)
7. [2025 Kentucky Derby Prospect Profiles: Risen Star Stakes Winner Magnitude, America's Best Racing](https://www.americasbestracing.net/the-sport/2025-2025-kentucky-derby-prospect-profiles-risen-star-stakes-winner-magnitude)
8. [Equibase Analysis: Sovereignty Poised To Dominate Midsummer Derby, Paulick Report](https://paulickreport.com/horseplayers/equibase-analysis-sovereignty-poised-to-dominate-midsummer-derby)
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*Topic: Encyclopedia › Sports, games, and recreation › Individual sports and outdoor recreation › Equestrian and animal sports › Horse racing › Racehorses and breeding › Individual Thoroughbred flat racehorses*
*Initially written Sep 17, 2026 · Reviewed: Sep 30, 2026; Oct 21, 2026 · Edited: Sep 30, 2026; Oct 21, 2026 · Last review: Oct 21, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license