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RIA / WealthRegistered adviserasset managerSEC registeredRAUM 100m 1b

SQUARE CIRCLE IA LP

CRD 312718

BOSTON, MA

This is the graph view. The full profile, with its team, deals and sources, is on RIA / Wealth Management.Open the full profile →

Search this name across graphsid dfx:ria:fa9cbc1a-5d14-cad6-ac25-9ed75e198ae6

Data as of Mar 27, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 5:28 AM UTC and rebuilt at most every 15 minutes.

Relationships: 8
Dated events: 3
On other graphs: 1
Observed: Jun 29, 2022 to Mar 27, 2026
6 observations

Across DFX

same identity by shared identifier, citation, or a bridge measured by hand

Venture Capitalidentity

Square Circle Ia LP

Venture manager · shared crd

Facts

fact = as filed or announced; derived = computed by DFX; estimate = a band, never a point

Firm class: asset managerderivedprivate_client_share=0.0 fund_share=1.0 institutional_share=0.0 related_bd=false related_bank=true bd_reps=0.0
Regulatory AUM: $449MItem 5.F on the latest filing (2026-03-27); as reported, and an affiliate's assets may be counted again on its own filing
Discretionary RAUM: $449M
Private client RAUM: $0derivedItem 5.D individuals plus high net worth individuals
Private client share: 0%derivedprivate client RAUM over total RAUM
Advisors on IAPD: 0
Employees: 3
Advisory employees: 2
Offices: 0Schedule D 1.F, beyond the principal office
Accounts: 2
Private funds: 2Schedule D 7.B(1)
Custody, client assets: $449M
SEC number: 801-126286
CIK: 1932180
CRD: 312718
Filings on the tape: 6
First filed: Jun 29, 2022
Latest filed: Mar 27, 2026
Organised: Limited Partnership, DE

Private funds

Schedule D 7.B(1); gross asset value as reported, never fund size; reporting ends 2024-12-31

Fund	Type	Reported GAV	As of	Owners	First reported	Status	Form D file
ANAXAGORAS LP	Hedge Fund	$320M	Aug 30, 2024	1	Mar 16, 2021	reported	021-392387
OENOPIDES LP	Hedge Fund	$68.4M	Aug 30, 2024	3	Mar 28, 2024	reported	021-489504
SQUARE CIRCLE OPPORTUNITIES LP	Hedge Fund	$14.7M	Mar 31, 2022	2	Mar 31, 2022	dropped	n/a

Owners and control persons

Schedule A and B as filed; ownership codes are the form's bands (NA under 5%, A 5 to 10%, B 10 to 25%, C 25 to 50%, D 50 to 75%, E over 75%); people are listed as filed and never merged by name

Owner	Title	Ownership code	Control person	Acquired	First seen	Last seen
HAN, DONG, NMN	Trustee	E	yes	08/2023	Jun 29, 2022	Aug 30, 2024
HOROWITZ, ADAM, A.	CHIEF COMPLIANCE OFFICER; CHIEF FINANCIAL OFFICER; CHIEF OPERATING OFFICER	Na	yes	03/2022	Jun 29, 2022	Aug 30, 2024
REVOCABLE TRUST OF DONG HAN U/A/D AUGUST 15, 2023	MANAGING MEMBER	E	yes	08/2023	Mar 28, 2024	Aug 30, 2024
REVOCABLE TRUST OF DONG HAN U/A/D AUGUST 15, 2023	LIMITED PARTNER	Na	yes	08/2023	Mar 28, 2024	Aug 30, 2024
SQUARE CIRCLE IA GP LLC	GENERAL PARTNER	E	yes	12/2020	Jun 29, 2022	Aug 30, 2024

Affiliates (Item 7.A)

as filed on Item 7.A; a related person with a CRD on the graph links to its own page

Related person	Type	Class on the graph	Its RAUM	Control	Common control	State
SQUARE CIRCLE GP LLC	n/a	n/a	n/a	N	yes	n/a

Regulatory AUM by fiscal year

annual amendments (and the roster's annual snapshot) as filed; where a year was amended twice the later filing draws the line

Fiscal year	Filed	RAUM	Discretionary	Employees	Advisory staff	Private funds	Fund GAV
2025	Mar 27, 2026	$449M	$449M	3	2	2	n/a
2024	Mar 28, 2025	$511M	$511M	4	3	2	n/a
2023	Mar 28, 2024	$388M	$388M	4	3	2	$388M
2022	Mar 30, 2023	$220M	$220M	3	2	1	$220M

Growth

derived from consecutive annual filings; RAUM as reported

Latest fiscal year	RAUM	A year earlier	1y change	Three years earlier	3y CAGR	Employees	A year earlier	Offices	A year earlier
2025	$449M	$511M	-12.2%	$220M	26.7%	3	4	0	0

Relationships

Advises (3)

→ OENOPIDES LPPrivate fundHedge Fund, IA
Mar 28, 2024 to presentfactForm ADV
→ ANAXAGORAS LPPrivate fundHedge Fund, IA
Mar 16, 2021 to presentfactForm ADV
→ SQUARE CIRCLE OPPORTUNITIES LPPrivate fundHedge Fund, ERA, no longer reported
Mar 31, 2022 to Mar 31, 2022factForm ADV

Controls (4)

← HAN, DONG, NMNOwnerTRUSTEE, ownership code E, individual
Jun 29, 2022 to Aug 30, 2024factForm ADV
← HOROWITZ, ADAM, A.OwnerCHIEF COMPLIANCE OFFICER; CHIEF FINANCIAL OFFICER; CHIEF OPERATING OFFICER, ownership code NA, individual
Jun 29, 2022 to Aug 30, 2024factForm ADV
← REVOCABLE TRUST OF DONG HAN U/A/D AUGUST 15, 2023OwnerMANAGING MEMBER, ownership code E, domestic entity
Mar 28, 2024 to Aug 30, 2024factForm ADV
← SQUARE CIRCLE IA GP LLCOwnerGENERAL PARTNER, ownership code E, domestic entity
Jun 29, 2022 to Aug 30, 2024factForm ADV

Dated events

Occurred
Mar 28, 2025
Regulatory AUM changed
Square Circle Ia Lp reported RAUM $511.3M, up 32% from $388.5M (2024-08-30 to 2025-03-28)
Form ADVobserved 6 days ago
$123M
Occurred
Mar 28, 2024
Regulatory AUM changed
Square Circle Ia Lp reported RAUM $388.5M, up 76% from $220.5M (2023-03-30 to 2024-03-28)
Form ADVobserved 6 days ago
$168M
Occurred
Jun 29, 2022
First Form ADV filing
Square Circle Ia Lp filed its initial SEC registration (Form ADV)
Form ADVobserved 6 days ago

Provenance

Graph: RIA / Wealth Management
Canonical id: dfx:ria:fa9cbc1a-5d14-cad6-ac25-9ed75e198ae6
First observed: Jun 29, 2022
Last observed: Mar 27, 2026 5 months ago
Source families: Federal regulator filings
3 registered feeds stand behind this record; each fact above carries its own dates and, where the publisher serves one, its document.
Resolution: Identity across graphs by shared identifier (CRD, CIK, EIN, ADV fund id, individual CRD) or citation; a name match is shown as a candidate and never merged.

SQUARE CIRCLE IA LP

CRD 312718

BOSTON, MA

This is the graph view. The full profile, with its team, deals and sources, is on RIA / Wealth Management.Open the full profile →

Search this name across graphsid dfx:ria:fa9cbc1a-5d14-cad6-ac25-9ed75e198ae6

Data as of Mar 27, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 5:28 AM UTC and rebuilt at most every 15 minutes.

Fund

Type

Reported GAV

As of

Owners

First reported

Status

Form D file

ANAXAGORAS LP

Hedge Fund

$320M

Aug 30, 2024

Mar 16, 2021

reported

021-392387

OENOPIDES LP

Hedge Fund

$68.4M

Aug 30, 2024

Mar 28, 2024

reported

021-489504

SQUARE CIRCLE OPPORTUNITIES LP

Hedge Fund

$14.7M

Mar 31, 2022

dropped

n/a

Owner

Title

Ownership code

Control person

Acquired

First seen

Last seen

HAN, DONG, NMN

Trustee

yes

08/2023

Jun 29, 2022

Aug 30, 2024

HOROWITZ, ADAM, A.

CHIEF COMPLIANCE OFFICER; CHIEF FINANCIAL OFFICER; CHIEF OPERATING OFFICER

yes

03/2022

Jun 29, 2022

Aug 30, 2024

REVOCABLE TRUST OF DONG HAN U/A/D AUGUST 15, 2023

MANAGING MEMBER

yes

08/2023

Mar 28, 2024

Aug 30, 2024

REVOCABLE TRUST OF DONG HAN U/A/D AUGUST 15, 2023

LIMITED PARTNER

yes

08/2023

Mar 28, 2024

Aug 30, 2024

SQUARE CIRCLE IA GP LLC

GENERAL PARTNER

yes

12/2020

Jun 29, 2022

Aug 30, 2024

Related person

Type

Class on the graph

Its RAUM

Control

Common control

State

SQUARE CIRCLE GP LLC

n/a

yes

n/a

Fiscal year

Filed

RAUM

Discretionary

Employees

Advisory staff

Offices

Private funds

Fund GAV

2025

Mar 27, 2026

$449M

n/a

2024

Mar 28, 2025

$511M

n/a

2023

Mar 28, 2024

$388M

2022

Mar 30, 2023

$220M

Latest fiscal year

RAUM

A year earlier

1y change

Three years earlier

3y CAGR

Employees

A year earlier

Offices

A year earlier

2025

$449M

$511M

-12.2%

$220M

26.7%