Circumference Group LLC — 13F Holdings & Portfolio
CIK 1742372 · latest 13F-HR filed 2026-08-14
Circumference Group LLC manages $46.0M in 13F-reported U.S. long-equity assets across 13 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are EXTR (15.82%), ICLR (12.83%), RGP (12.82%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 1 new position and exited 1; 6 existing positions rose in reported value and 4 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2026-08-14
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
4 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 90.8%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Mar 20, 2026.
STE. 405
LITTLE ROCK, AR 72202
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| CIRCUMFERENCE GROUP HOLDINGS LLC Control | MEMBER since May 2009 | 75% or more | Domestic Entity |
| FOX, JEFFREY, HOWARD Control | CEO since Nov 2021 | 75% or more | Individual |
| LAMMERS, JOHN, JAMES Control | CHIEF INVESTMENT OFFICER since Apr 2022 | Less than 5% | Individual |
| LARKIN, HOLLY, LEIGH Control | CCO, COO since Jan 2013 | Less than 5% | Individual |
| MCNEESE, KYLE, EDWIN Control | CHIEF FINANCIAL OFFICER since Jun 2009 | Less than 5% | Individual |
| FOX, JEFFREY, HOWARD Control Indirect owner via JEFFREY H. FOX REVOCABLE TRUST | TRUSTEE since May 2000 | General partner, trustee or manager | Individual |
| JEFFREY H. FOX REVOCABLE TRUST Control Indirect owner via CIRCUMFERENCE GROUP HOLDINGS LLC | MEMBER since May 2009 | 75% or more | Domestic Entity |
Ownership & leadership changes · 3 filings with changes since Jun 28, 2018
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
- No longer listedHALEY, JOHN, STUART · FOUNDING CHIEF INVESTMENT OFFICER · Less than 5% · control person · listed since Apr 2022
- ChangedHALEY, JOHN, STUART · title PRESIDENT & CO-CHIEF INVESTMENT OFFICER → FOUNDING CHIEF INVESTMENT OFFICER
- ChangedLAMMERS, JOHN, JAMES · title CO-CHIEF INVESTMENT OFFICER → CHIEF INVESTMENT OFFICER
- AddedFOX, JEFFREY, HOWARD · CEO · 75% or more · control person
- ListedCIRCUMFERENCE GROUP HOLDINGS LLC · MEMBER · 75% or more · control person
- ListedFOX, JEFFREY, HOWARD · TRUSTEE · General partner, trustee or manager · indirect via JEFFREY H. FOX REVOCABLE TRUST · control person
- ListedHALEY, JOHN, STUART · PRESIDENT & CO-CHIEF INVESTMENT OFFICER · Less than 5% · control person
- ListedJEFFREY H. FOX REVOCABLE TRUST · MEMBER · 75% or more · indirect via CIRCUMFERENCE GROUP HOLDINGS LLC · control person
- ListedLAMMERS, JOHN, JAMES · CO-CHIEF INVESTMENT OFFICER · Less than 5% · control person
- ListedLARKIN, HOLLY, LEIGH · CCO, COO · Less than 5% · control person
- ListedMCNEESE, KYLE, EDWIN · CHIEF FINANCIAL OFFICER · Less than 5% · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- ICON PUB LTD CO$2.7M +84.0%
- EXTREME NETWORKS INC$1.9M +36.1%
- TWILIO INC$981.1K +31.2%
- RESOURCES CONNECTION INC$722.4K +13.9%
- RAPID7 INC$462.4K +47.0%
Top Trims
- WIX COM LTD-$2.9M -64.7%
- UIPATH INC-$913.0K -19.4%
- GLOBANT S A-$721.1K -37.2%
- SPRINKLR INC-$512.2K -14.0%
Circumference Group LLC Holdings (2026-06-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | EXTREME NETWORKS INC | EXTR | 30226D106 | $7.3M | 15.82% | 225,100 | SH |
| 2 | ICON PUB LTD CO | ICLR | G4705A100 | $5.9M | 12.83% | 34,000 | SH |
| 3 | RESOURCES CONNECTION INC | RGP | 76122Q105 | $5.9M | 12.82% | 1,389,243 | SH |
| 4 | CORE & MAIN INC | CNM | 21874C102 | $4.8M | 10.48% | 100,000 | SH |
| 5 | TWILIO INC | TWLO | 90138F102 | $4.1M | 8.96% | 20,000 | SH |
| 6 | UIPATH INC | PATH | 90364P105 | $3.8M | 8.26% | 350,000 | SH |
| 7 | UPWORK INC | UPWK | 91688F104 | $3.2M | 6.93% | 382,000 | SH |
| 8 | SPRINKLR INC | CXM | 85208T107 | $3.1M | 6.83% | 609,800 | SH |
| 9 | AMPLITUDE INC | AMPL | 03213A104 | $1.8M | 3.95% | 238,000 | SH |
| 10 | AZENTA INC | AZTA | 114340102 | $1.8M | 3.88% | 70,000 | SH |
| 11 | WIX COM LTD | WIX | M98068105 | $1.6M | 3.45% | 35,000 | SH |
| 12 | RAPID7 INC | RPD | 753422104 | $1.4M | 3.14% | 178,543 | SH |
| 13 | GLOBANT S A | GLOB | L44385109 | $1.2M | 2.64% | 42,000 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $46.0M | 13 | 0001420506-26-001805 |
| 2026-03-31 | 2026-05-15 | $44.6M | 13 | 0001420506-26-001158 |
| 2025-12-31 | 2026-02-17 | $92.8M | 22 | 0001420506-26-000560 |
| 2025-09-30 | 2025-11-14 | $89.5M | 25 | 0001420506-25-003406 |
SUITE 405
LITTLE ROCK, AR 72202