Medicxi Ventures Management (Jersey) Ltd — 13F Holdings & Portfolio
CIK 1715579 · latest 13F-HR filed 2026-08-04
Medicxi Ventures Management (Jersey) Ltd manages $177.4M in 13F-reported U.S. long-equity assets across 3 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are PHAT (45.65%), NAMS (42.19%), AURA (12.16%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 0 new positions and exited 1; 1 existing position rose in reported value and 1 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 2026-08-04
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
3 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 = 100%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Feb 26, 2026.
ST. HELIER JE4 9WG
Jersey
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| CHESNAY, FRANCOIS, XAVIER ALAIN HENRI Control | DIRECTOR since Mar 2017 | Less than 5% | Individual |
| CROCKER, NIGEL Control | DIRECTOR since Jul 2022 | Less than 5% | Individual |
| DE RUBERTIS, FRANCESCO Control | SHAREHOLDER since Dec 2015 | 25–50% | Individual |
| Johnstone-Scott, Giles Control | DIRECTOR since Nov 2015 | Less than 5% | Individual |
| Lee, Richard Control | DIRECTOR since Dec 2015 | 10–25% | Individual |
| WIGNALL, ANDREW Control | DIRECTOR since Dec 2015 | Less than 5% | Individual |
| Lee, Richard | SHAREHOLDER since Feb 2021 | 10–25% | Individual |
| Mariggi, Giovanni | SHAREHOLDER since Feb 2021 | 10–25% | Individual |
| Pericolini, Giovanni, Michael | SHAREHOLDER since Jan 2025 | 10–25% | Individual |
| Williams, Nicholas, Alexander | SHAREHOLDER since Jan 2025 | 10–25% | Individual |
Ownership & leadership changes · 10 filings with changes since Aug 8, 2016
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 listedLIEW, GAILINA, JIA-HSIN · DIRECTOR · Less than 5% · control person · listed since Feb 2023
- AddedPericolini, Giovanni, Michael · SHAREHOLDER · 10–25%
- AddedWilliams, Nicholas, Alexander · SHAREHOLDER · 10–25%
- ChangedDE RUBERTIS, FRANCESCO · ownership 50–75% → 25–50%
- No longer listedPatton, Christopher, Norden Aldis · DIRECTOR · Less than 5% · control person · listed since Sep 2021
- AddedCROCKER, NIGEL · DIRECTOR · Less than 5% · control person
- AddedLIEW, GAILINA, JIA-HSIN · DIRECTOR · Less than 5% · control person
- No longer listedJeanne, Andrew, Charles · DIRECTOR · Less than 5% · control person · listed since Dec 2020
- No longer listedJohnson, Kevin · SHAREHOLDER · 25–50% · control person · listed since Dec 2015
- No longer listedOllier, Michele · SHAREHOLDER · 25–50% · control person · listed since Dec 2015
- AddedPatton, Christopher, Norden Aldis · DIRECTOR · Less than 5% · control person
- ChangedDE RUBERTIS, FRANCESCO · ownership 25–50% → 50–75%
- No longer listedDI SANTO, Alexander · DIRECTOR · Less than 5% · control person · listed since Mar 2017
- AddedJeanne, Andrew, Charles · DIRECTOR · Less than 5% · control person
- AddedMariggi, Giovanni · SHAREHOLDER · 10–25%
- ChangedLee, Richard · title DIRECTOR → DIRECTOR / SHAREHOLDER; ownership Less than 5% → 10–25%
- No longer listedZOCCO, GIUSEPPE · SHAREHOLDER · 25–50% · control person · listed since May 2016
- No longer listedGrainger, David · SHAREHOLDER · 10–25% · control person · listed since Dec 2015
- ChangedDE RUBERTIS, FRANCESCO · title DIRECTOR / SHAREHOLDER → SHAREHOLDER; ownership 10–25% → 25–50%
- ChangedJohnson, Kevin · ownership 10–25% → 25–50%
- ChangedOllier, Michele · ownership 10–25% → 25–50%
- ChangedZOCCO, GIUSEPPE · ownership 10–25% → 25–50%
- No longer listedLE CORNU, CHARLES, HARVIE · DIRECTOR · Less than 5% · control person · listed since Nov 2015
- AddedCHESNAY, FRANCOIS, XAVIER ALAIN HENRI · DIRECTOR · Less than 5% · control person
- AddedDI SANTO, Alexander · DIRECTOR · Less than 5% · control person
- AddedZOCCO, GIUSEPPE · SHAREHOLDER · 10–25% · control person
- ChangedDE RUBERTIS, FRANCESCO · ownership 25–50% → 10–25%
- ChangedGrainger, David · ownership 25–50% → 10–25%
- ChangedJohnson, Kevin · ownership 25–50% → 10–25%
- ChangedOllier, Michele · ownership 25–50% → 10–25%
- AddedWIGNALL, ANDREW · DIRECTOR · Less than 5% · control person
Older changes (1 more filing)
- ListedDE RUBERTIS, FRANCESCO · DIRECTOR / SHAREHOLDER · 25–50% · control person
- ListedGrainger, David · SHAREHOLDER · 25–50% · control person
- ListedJohnson, Kevin · SHAREHOLDER · 25–50% · control person
- ListedJohnstone-Scott, Giles · DIRECTOR · Less than 5% · control person
- ListedLE CORNU, CHARLES, HARVIE · DIRECTOR · Less than 5% · control person
- ListedLee, Richard · DIRECTOR · Less than 5% · control person
- ListedOllier, Michele · SHAREHOLDER · 25–50% · 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.
Medicxi Ventures Management (Jersey) Ltd 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).
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-04 | $177.4M | 3 | 0001193125-26-332000 |
| 2026-03-31 | 2026-04-21 | $981.8M | 4 | 0001193125-26-166701 |
| 2025-12-31 | 2026-01-23 | $835.0M | 5 | 0001193125-26-020931 |
44 ESPLANADE
ST. HELIER, Y9 JE4 9WG