Home / Stats & Records / Yard Concentration Index
LiveFree dataUpdated after every racing day

RaceWatch Yard Concentration Index

The share of British and Irish winners won by the ten biggest yards each season, Flat and jumps, with the top yard's share and a concentration score in plain words. The current season moves after every racing day.

Season to date: top 10 yards have 40.1% of Irish jumps winners and 20.8% of British Flat winners · Results to 16 October 2026 · Refreshed 17 October 2026
45.1%
Top 10 Irish jumps yards, last season
27.8%
Top 10 British jumps yards, last season
20.8%
Top 10 British Flat yards, last season
40.1%
Top 10 Irish jumps yards, this season
45.1%

The ten Irish jumps yards with most winners won 45.1% of Irish jumps races in 2025/26, against 27.8% for the top ten in Britain.Sample: Every British and Irish winner · Window: Flat 2015 to date; jumps 2014/15 to date · Source: RaceWatch results database (every British and Irish winner)

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

  • 14racecard tabs per race
  • 20+bookmaker prices side by side
  • Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Top 10 yards' share of winners, National Hunt
GBIRE
0%20%40%60%80%2014/152015/162016/172017/182018/192019/202020/212021/222022/232023/242024/252025/26GB 2014/15: 24.9%GB 2015/16: 23.3%GB 2016/17: 27.5%GB 2017/18: 25.1%GB 2018/19: 26.2%GB 2019/20: 25.5%GB 2020/21: 27.9%GB 2021/22: 27%GB 2022/23: 27.2%GB 2023/24: 26.4%GB 2024/25: 26.1%GB 2025/26: 27.8%27.8%IRE 2014/15: 38.7%IRE 2015/16: 40.2%IRE 2016/17: 46.1%IRE 2017/18: 51.4%IRE 2018/19: 52.6%IRE 2019/20: 51.7%IRE 2020/21: 44.8%IRE 2021/22: 44.6%IRE 2022/23: 47.4%IRE 2023/24: 50.5%IRE 2024/25: 45.7%IRE 2025/26: 45.1%45.1%

Share of winners by Season

RaceWatch Yard Concentration Index: National Hunt by season

2026/27 (to date)GB34.3%10.9%43.00233970197333
2026/27 (to date)IRE40.1%9.1%37.80265689157276
2025/26GB27.8%5.5%71.901393,543314986
2025/26IRE45.1%12.7%24.704051,522219686
2024/25GB26.1%5.0%75.501323,607336941
2024/25IRE45.7%13.3%25.603911,549256708
2023/24GB26.4%3.8%82.401213,513317928
2023/24IRE50.5%17.1%17.305781,500225757
2022/23GB27.2%4.3%76.301313,7773461,026
2022/23IRE47.4%15.9%20.104971,488230706
2021/22GB27.0%3.9%78.601274,0173741,084
2021/22IRE44.6%12.9%28.003571,569241700
2020/21GB27.9%5.3%72.001393,340325931
2020/21IRE44.8%12.3%26.903721,474247660
2019/20GB25.5%3.8%82.401213,123323795
2019/20IRE51.7%13.1%22.004541,272210657
2018/19GB26.2%5.2%77.701293,9173931,027
2018/19IRE52.6%14.2%20.604861,460236768
2017/18GB25.1%4.2%83.001213,695360927
2017/18IRE51.4%15.0%18.505411,410227725
2016/17GB27.5%4.3%77.501293,9653801,091
2016/17IRE46.1%13.6%23.204321,419251654
2015/16GB23.3%3.3%93.801073,692400861
2015/16IRE40.2%13.4%30.103331,384260556
2014/15GB24.9%3.3%91.601093,842429957
2014/15IRE38.7%13.2%33.902951,422279551

Winners are races won in the country that season, credited to the winning trainer. Top 10 share = winners by the ten yards with most winners divided by all winners. Concentration score = sum of every yard's squared share of winners times 10,000 (a Herfindahl-Hirschman index). Equivalent equal-sized yards = 10,000 divided by that score. Jumps seasons follow the official British and Irish dates. The current season is to date.

Top 10 yards this season: National Hunt 2026/27

GB1Dan Skelton10610.9%
GB2Olly Murphy383.9%
GB3Mickey Bowen363.7%
GB4Jonjo & A.J. O'Neill262.7%
GB5Jennie Candlish242.5%
GB6Jamie Snowden242.5%
GB7James Owen242.5%
GB8Nigel & Willy Twiston-Davies202.1%
GB9Micky Hammond181.9%
GB10Sam England171.8%
IRE1Willie Mullins639.1%
IRE2Henry de Bromhead507.3%
IRE3Gordon Elliott456.5%
IRE4Gavin Cromwell253.6%
IRE5P J Rothwell192.8%
IRE6John Patrick Ryan172.5%
IRE7Andrew Slattery162.3%
IRE8Declan Queally142.0%
IRE9Ross O'Sullivan142.0%
IRE10David Harry Kelly131.9%

British and Irish tables are separate. Season to date; updates after every racing day.

Top 10 yards' share of winners, Flat
GBIRE
0%20%40%60%80%20152016201720182019202020212022202320242025GB 2015: 23.2%GB 2016: 21.6%GB 2017: 22%GB 2018: 22.3%GB 2019: 24.2%GB 2020: 23.5%GB 2021: 22.2%GB 2022: 21.7%GB 2023: 20.4%GB 2024: 18.5%GB 2025: 20.8%20.8%IRE 2015: 45.2%IRE 2016: 45.5%IRE 2017: 45.2%IRE 2018: 48.2%IRE 2019: 49.8%IRE 2020: 47.2%IRE 2021: 43.1%IRE 2022: 40.1%IRE 2023: 38.4%IRE 2024: 42%IRE 2025: 41.1%41.1%

Share of winners by Season

RaceWatch Yard Concentration Index: Flat by season

2026 (to date)GB20.8%3.2%107.10935,6443461,175
2026 (to date)IRE44.1%11.9%31.603171,169160515
2025GB20.8%2.9%108.20926,5333451,362
2025IRE41.1%8.3%36.802721,353171556
2024GB18.5%2.6%120.20836,4603561,198
2024IRE42.0%9.5%35.302831,373190577
2023GB20.4%2.7%109.00926,3663541,296
2023IRE38.4%7.8%43.202311,379181529
2022GB21.7%2.8%104.50966,3353301,374
2022IRE40.1%8.8%38.402601,376185552
2021GB22.2%3.2%101.70986,5273401,451
2021IRE43.1%8.7%35.702801,425188614
2020GB23.5%3.3%96.301045,0933281,195
2020IRE47.2%9.2%31.903141,230165581
2019GB24.2%3.9%93.601076,3593741,540
2019IRE49.8%9.7%29.103431,239154617
2018GB22.3%3.4%100.90996,5503711,462
2018IRE48.2%12.4%27.303661,234165595
2017GB22.0%3.4%103.20976,3973891,409
2017IRE45.2%10.5%32.603071,172170530
2016GB21.6%3.1%105.60956,2853871,360
2016IRE45.5%10.4%31.403191,152181524
2015GB23.2%3.8%100.201006,2564081,449
2015IRE45.2%9.7%32.703061,113172503

Winners are races won in the country that season, credited to the winning trainer. Top 10 share = winners by the ten yards with most winners divided by all winners. Concentration score = sum of every yard's squared share of winners times 10,000 (a Herfindahl-Hirschman index). Equivalent equal-sized yards = 10,000 divided by that score. Flat seasons are calendar years. The current season is to date.

Top 10 yards this season: Flat 2026

GB1Andrew Balding1823.2%
GB2William Haggas1262.2%
GB3Karl Burke1242.2%
GB4James Owen1212.1%
GB5Tim Easterby1212.1%
GB6Tony Carroll1192.1%
GB7Richard Hannon991.8%
GB8Ralph Beckett981.7%
GB9John & Thady Gosden981.7%
GB10Charlie Johnston871.5%
IRE1Joseph Patrick O'Brien13911.9%
IRE2Aidan O'Brien776.6%
IRE3Johnny Murtagh474.0%
IRE4Andrew Slattery463.9%
IRE5Mrs John Harrington413.5%
IRE6Ger Lyons383.3%
IRE7Adrian McGuinness383.3%
IRE8Paddy Twomey322.7%
IRE9Denis Gerard Hogan292.5%
IRE10Robson De Aguiar282.4%

British and Irish tables are separate. Season to date; updates after every racing day.

Every yard's runners on today's cards

Members see trainer patterns on every racecard and can follow any yard in Tracker+ for a notification when it declares a runner.

Start free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

What is the RaceWatch Yard Concentration Index?

The index measures how much of each country's racing the biggest yards win: the top ten yards' share of winners, the top yard's share, and a concentration score from every yard's share.

Is Irish jumps racing more concentrated than British?

The top ten Irish jumps yards won 45.1% of races in 2025/26, against 27.8% in Britain. The equivalent-yards figure tells the same story.

Has concentration changed over time?

The top ten British jumps yards won 24.9% of races in 2014/15 and 27.8% in 2025/26. The charts show every season.

What does equivalent equal-sized yards mean?

Equivalent equal-sized yards is the number of equal yards that would give the same concentration score. A lower number means winners are shared among fewer big yards.

Questions people ask

How is the concentration score calculated?

Each yard's share of winners is squared, the squares are added up and the total is multiplied by 10,000, the Herfindahl-Hirschman method. A score near zero means winners are widely spread.

What share of winners do the top ten yards win?

In 2025/26 the top ten yards won 45.1% of Irish jumps races and 27.8% of British jumps races. The tables give every season since 2014/15.

Are British and Irish yards counted together?

No. Each country is measured on its own races, so an Irish yard's British winners count only in the British figures.

Can I quote the RaceWatch Yard Concentration Index?

Yes. Please cite it as the RaceWatch Yard Concentration Index with the season, country and code, for example Irish jumps 2025/26: top ten share 45.1%.

How often is the index updated?

The current season refreshes after every racing day, as results come in. Completed seasons are fixed once they end and do not change.

More free data

Yard filesForm and records for leading yards.Championship standingsLive trainers' title tables.Most winners in a season: trainersSeason records since 1990.RaceWatch Field Size IndexField size against the norm.Irish raidersIrish-trained runners in Britain.Racing reportsMonthly reports and the annual review

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

  • 14racecard tabs per race
  • 20+bookmaker prices side by side
  • Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Updated