Entity type
Company
Filer Snapshot
53 HOUSE LLP
CIK 0001636974. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.
Total filings
43
Latest filing
15 May 2026
Industry
n/a
Filing-backed research brief
Start with the SEC data that changes for this CIK
Latest signal: 13F-HR for Q1 2025. Each card links back to the PortfolioSavvy page where the filing evidence is closest.
Latest 13F portfolio
$113.26M
8 holdings for Q1 2025
Open portfolioLargest parsed holding
UNH
$45.23M reported value
Open holding13D/G large stake
—
No recent parsed 13D/G stake row for this CIK.
Browse 13D/GInsider / owner context
—
No parsed Forms 3/4/5 owner position for this CIK.
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Source: SEC Form 13F
View Source Filing
13F-HR filed on 15 May 2026 for CIK 0001636974.
- Business address
- 13 Hanover Square, London, W1S 1HN
- State of incorporation
- United Kingdom
- Fiscal year-end
- 31 March
- Former SEC names
- THUNDERBIRD PARTNERS LLP (to 14 Feb 2025)
Identity
1 identity field
SEC profile 3 profile fields
Filer intelligence
What SEC filings say about 53 HOUSE LLP
A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.
Quick read
- Latest parsed 13F shows $113.26M across 8 reported holdings for Q1 2025.
- Largest parsed 13F holding: UNH at $45.23M.
SEC source mix
Counts show available parsed rows, not one combined ownership total.
Top parsed 13F holdings
Visual share of the latest parsed 13F portfolio. Values are reported market value, not a recommendation.
Top 5 concentration
85%
Share of latest parsed 13F value represented by the visible holdings below.
Top 5 reported value
$95.8M
Compared with $113.26M total 13F value.
Top 5 net change
+$53.08M
Position-value change inside the visible top holdings only.
13F concentration map
A simple visual split of the latest parsed 13F portfolio.
Largest add: VIK ยท Largest trim: TAL
UNH
VIK
ILMN
CI
WDC
Other holdings
Latest update
What changed recently for 53 HOUSE LLP
Latest 13F period: Q1 2026. Open the source-backed page to inspect the fresh filing or facts context.
Update date
15 May 2026
Page type
Filer profile
Latest period
Q1 2026
Institutional portfolio context was refreshed from a 13F filing filed on 15 May 2026.
Benchmark Context
Benchmark context for this company
53 HOUSE LLP has a source-backed company facts view where you can compare the latest reported metrics with its own recent history and with peer rankings for the same metric.
Compared with
Start on the facts page for period-to-period context, then open a metric ranking when you want to compare the same reported fact across other SEC-reporting companies.
Why this is notable
Latest 13F period: Q1 2026. That gives you a fresh baseline before you compare this company with peers.
- Peer comparisons stay conservative: same metric, compatible units, latest valid company row only.
- Open the facts page first if you want the cleanest path to verification.
Benchmark context is only shown where the app has enough comparable SEC-backed data to keep the interpretation honest.
SEC filing record
CIK 0001636974 filing coverage
Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.
SEC filings
43
First seen
16 Feb 2016
Latest filing
15 May 2026
Entity
Company
Observed form types
13F-HR
13F-HR/A
CIK-linked evidence first
Latest Filings
Showing the latest 12 of 43 SEC filings for 53 HOUSE LLP.
13F-HR
13F-HR filing
- Filing date
- 15 May 2026
- Reporting date
- 31 Mar 2026
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 17 Feb 2026
- Reporting date
- 31 Dec 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 14 Nov 2025
- Reporting date
- 30 Sep 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 14 Aug 2025
- Reporting date
- 30 Jun 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 14 May 2025
- Reporting date
- 31 Mar 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 14 Feb 2025
- Reporting date
- 31 Dec 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 14 Nov 2024
- Reporting date
- 30 Sep 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 13 Aug 2024
- Reporting date
- 30 Jun 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR/A
13F-HR/A filing
- Filing date
- 15 May 2024
- Reporting date
- 31 Mar 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 15 May 2024
- Reporting date
- 31 Mar 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 15 Feb 2024
- Reporting date
- 31 Dec 2023
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 13 Nov 2023
- Reporting date
- 30 Sep 2023
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing