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Trainer profile

H De Nicolay

608 runners in the lifetime window · 65 individual horses
As at 6 Nov 2026 · KTB archive: 2005–present, updated daily
Last runner Sep 2024 100% of runners on the flat
from 1 Jan 2008 — the aggregate floor: every horse in the window has a complete captured career behind it
34–608
Wins / Runs
5.6%
Strike rate
n=608
128 (21%)
Placed
0.81
n=598 · 0.69 incl. margin
−215.60
£1 level stake
n=605 at SP · −35.6%
£884k
Prize money (window)
Strike by season
3.4%
KTB Yard Profile

Sends out around 30 runners a season, almost all on the flat, winning with 6% of them — a touch below the margin-free market read across the lifetime window (Fair A/E 0.81). With a claiming rider up the record reads 11% (82 runs).

Deterministic profile computed from 608 archived runs (lifetime window) · updated 6 Nov 2026
KTB at a glance Fires May–Jul Ronan Thomas: 2% from 50 Claiming riders: 11%
The read

It is weakest at Longchamp (FR) (0% over 36 runners) — the widest gap in the record. Runners with a claiming rider up have been a positive signal at 11% (n=82, Fair A/E 1.69), but horses returning fresh after 61+ days have been a poor signal at 2.4% (n=85, Fair A/E 0.47). Ronan Thomas rides 8% of the entries and sits below the yard's average (2% vs 5.6%, A/E 0.32). The yard also reads well on Soft going (9.4%, n=106). One Group or Graded win sits in the archive record — the biggest prize the yard has landed: the Prix des Reves d'Or - Jacques Bouchara at Vichy (FR) (May 2021, £26,786). Seasonally, the yard fires May–Jul.

Written from the figures on this page — every claim carries its sample. Descriptive, not a tip.

Yard patterns

the angles behind the record · vs 5.6% baseline
Fresh · 61+ days off
2.4%−3.2
n=85 · A/E 0.47 · £1 −47.20
New recruits · first run for the yard
0%−5.6
n=18 · A/E 0.00 · £1 −18.00
Debutants · first career start
4.3%−1.3
n=47 · A/E 1.11 · £1 −19.70
First-time headgear · true-first definition
9.5%+3.9
n=21 · A/E 0.93 · £1 +24.50
Headgear returns · back on after a bare run
0%−5.6
n=13 · A/E 0.00 · £1 −13.00
When favourite
25%
n=28 · A/E 1.07 · £1 −2.30
Claiming riders · a claimer in the saddle
11%+5.4
n=82 · A/E 1.69 · £1 +48.20
Group / Graded races · pattern & listed
4.5%−1.1
n=22 · A/E 0.69 · £1 −19.90

Each tile is the record in that situation vs the 5.6% baseline — descriptive splits with the sample always shown, for you to weigh. Tiles under 30 runs render muted. Headgear figures use the true-first definition (first gear appearance in the captured career); returns are gear back on after a bare run. Claiming riders are runs where the booked rider carried a weight claim. Group / Graded covers pattern and listed races. The same beliefs, tested across every yard and every GB and Irish race since 2005: Racing myths.

Notable angles

vs their own baseline
With claiming riders up 11% vs 5.6% · n=82
At Longchamp (FR) 0% vs 5.6% · n=36
On Soft going 9.4% vs 5.6% · n=106
With Ronan Thomas 2% vs 5.6% · n=50
On last-time-out winners 9.7% vs 5.6% · n=31
With C&D winners 8.8% vs 5.6% · n=68
Descriptive splits ranked by divergence × sample — insight, not instruction. Every angle carries its N; nothing under 30 runs qualifies. Rows within 2pts of the baseline appear only when the market-relative read (Fair A/E) diverges, and show it.

Record by conditions

same window as header

Going

GoingRWSR£1
Standard (AW) 303 14 4.6% −110.40
Soft 106 10 9.4% −6.80
Good 88 4 4.5% −29.20
Good to Soft 70 5 7.1% −31.30
Heavy 38 1 2.6% −35.90
Good to Firm 3 0 0% −2.00

Courses

CourseRWSR£1
Deauville (FR) 252 12 4.8% −139.80
Chantilly (FR) 143 8 5.6% −10.40
Saint-Cloud (FR) 96 7 7.3% −39.10
Maisons-Laffitte (FR) 51 3 5.9% −9.60
Longchamp (FR) 36 0 0% −36.00
Clairefontaine 11 1 9.1% +2.20
Dieppe (FR) 5 0 0% −5.00
Vichy 2 2 100% +1.10
Argentan (FR) 2 0 0% −1.00
Chateaubriant 2 0 0% −2.00
Le Croise-Laroche 1 0 0% −1.00
Angers (FR) 1 0 0% −1.00
Lisieux 1 1 100% +30.00
Cagnes-Sur-Mer (FR) 1 0 0% −1.00
Craon (FR) 1 0 0% −1.00

Class

ClassRWSR£1
Class 1 22 1 4.5% −19.90

Market position

In the bettingRWSRA/E£1
Favourite 31 7 22.6% 1.00 −5.30
2nd–3rd fav 72 6 8.3% 0.53 −12.90
4th–6th fav 166 12 7.2% 0.94 −47.30
7th+ in betting 336 8 2.4% 0.77 −150.10
Fair A/E per band is the tell: near 1.00 the market had it priced right; well above, the wins came where the market didn't expect them.

Rows below n=30 are shown faded — a small sample is a fact, not a trend. Every figure carries its N.

Horses trained

same window as header · most-raced first
HorseRWPlLast ran
Lustre (FR)from Yves de Nicolay 68 2 16 18 Oct 17
Ammobaby (FR) 35 3 13 10 May 22
Queen's Tea (FR) 28 2 10 30 Aug 15
Princess Of Snow (IRE) 27 1 5 5 Sep 18
Xedra (GB)from Mme Pia Brandt · then Stijn Derycke 25 1 3 6 Jan 18
Fille Du Roi (FR)then Marc Rosseel 23 4 7 6 Jun 24
Marvellous Night (FR) 22 0 11 16 Sep 19
Anouma Freedom (FR)then Yannick Fouin 21 2 4 7 Jan 17
Pont Neuilly (FR)from Yves de Nicolay 19 1 3 4 Jan 20
Just One Wish (IRE) 17 0 4 8 Apr 14
Lovely Miss (FR)then Guillaume Courbot 16 1 1 5 Nov 19
Showing the 60 most-raced of the 65 horses sent out in this window — each ran at least 1 time. Horses with fewer runs aren't listed; search finds any horse since 2005. Runs, wins and places only: a strike rate or a return on a handful of runs is noise, so none is quoted per horse — each horse's full record is on its own page.
Where they came from · where they went next

Of the 60 horses listed, 16 arrived from another yard in our archive, most often from Yves de Nicolay (6); 44 had their first archived run for this yard.

20 have since run for another yard, most often for P Decouz (3) and Guillaume Courbot (2); 40 have no later run for another yard in our archive.

Read from each listed horse's whole archived career (2005 onwards), not only this window, and counted over the horses listed above, not the whole string. “First archived run” means our archive holds nothing earlier, not that the horse was unraced. A horse with no later run elsewhere may still be here, be off the track, or have run somewhere our archive does not cover — none of that is asserted.

When the yard fires

strike by month, lifetime
JFMAMJJASOND
91124810862233
A flat yard: the season runs Mar–Oct. Muted months are small samples (under 30 runs) — read them with the caution they deserve.

Jockey bookings

same window · biggest samples first
Go-to riderRonan Thomas
8% of all rides
2% SR · A/E 0.32
RiderRWSR£1
Ronan Thomas 50 1 2% −41.50
Pierre-Charles Boudot 40 3 7.5% −25.10
Hugo Journiac 34 1 2.9% −30.20
Muted rows are under 30 rides and sit behind "Show all".

Career highlights

lifetime archive, 2012→
34
Archived wins
1
Pattern / graded wins
£884k
Prize money
2018
Best season · 6 wins
Diablotine (IRE) — Prix des Reves d'Or - Jacques Bouchara () (2yo) (Turf) Vichy (FR) · May 2021 · Listed
£26,786
McTenett (IRE) — Prix Kaldoun (Handicap) (3yo) (Turf) Saint-Cloud (FR) · Sep 2024
£17,391
Alvina (FR) — Prix de Caen (Conditions) (2yo) (Straight Course) (Turf) Deauville (FR) · Aug 2022
£14,286

Sires in the string

progeny record · win % by ground and trip
American Post (GB) 2.9% · 2–68
Progeny have won 10.1% of 2,964 runs since 2008 (263 horses). Strongest on Good to Firm going: 13.9% from 108.
Desert Style (IRE) 5.7% · 2–35
Progeny have won 8.6% of 2,544 runs since 2008 (247 horses). Weakest on Soft going: 4.7% from 339. Weakest over 1m5f – 2m (all codes): 4.7% from 232.
Planteur (IRE) 8.6% · 3–35
Progeny have won 8.5% of 1,533 runs since 2017 (164 horses).
Rajsaman (FR) 2.9% · 1–35
Progeny have won 6.9% of 2,839 runs since 2016 (311 horses).
Progeny have won 8.3% of 968 runs since 2012 (63 horses).
Medecis (GB) 3.4% · 1–29
Progeny have won 7.1% of 1,595 runs since 2008 (112 horses).
Top line: the yard's own record with each sire's runners (win %, wins–runs), same window as the header; faded under 30 runs. Beneath it: every run by that sire's progeny in our archive since 2008, as at 6 Nov 2026 — what they have done, not a forecast. A going or a distance is named only where at least 100 progeny runs sit 3 or more points from the sire's own win rate. Distance bands cover Flat and jumps together.

The record

latest 50 of 608 · newest first

The latest 50 of 608 archived runners, newest first. The full record runs from 15 April 2012 to 9 September 2024.

DateCourseHorseRaceFinishSP

Drawn from the whole archive (2005 onwards), so it can include runs outside the window the header statistics cover. Non-runners are not listed. A finish shown in letters is a non-completion (F fell · UR unseated · PU pulled up · BD brought down).

Quick answers

What is H De Nicolay's strike rate?
H De Nicolay has won 34 of 608 runners since 2008, a strike rate of 5.6% (as at 6 November 2026). Figures are computed from our own results archive.
Which course does H De Nicolay do best at?
Saint-Cloud (FR) by strike rate: 7 wins from 96 runners (7.3%) since 2008. Read from the 15 courses with the most runners on the same basis, and only those with at least 30 — a small sample cannot top the list, and a rarely-visited course is not in the comparison.
Who rides most for H De Nicolay?
Ronan Thomas, with 50 runners since 2008 — 8% of the total. That pairing has won 1 (2%).
What is H De Nicolay's Fair A/E?
0.81, from 598 runners with a computed fair probability since 2008. Fair A/E compares actual wins with a margin-stripped market expectation, so 1.00 is par: above it the wins came at bigger prices than the margin-free market implied, below it they did not.
Fair A/E compares wins with a margin-stripped market expectation. Favourite-heavy samples — top yards, leading riders — naturally read a few points warm, so 1.05 means "beat the margin-free market read", not "the market underrates this by 5%". Three sample sizes are reported and never blended: runs (n), the ROI basis (n at SP), and the fair-A/E basis (n with a computed fair probability).

Strike rate is wins over all runs (n). ROI is £1 level stakes at SP over runs with a parseable price (n at SP). Fair A/E is wins over margin-stripped market expectation, over runs with a computed fair probability (n fair). The three Ns can legitimately differ and are always shown. Figures as at 6 November 2026, computed from our own results archive (2005 onwards; aggregates from 2008).