Managers / Q1 2021 · view latest →
Burren Capital Advisors Ltd
CIK 0001542952 · SUITE 851, EUROPORT, EUROPORT ROAD, GIBRALTAR, J1, GX11 1AA · (00350) 2006 8880
Summary
Burren Capital Advisors Ltd reported $8M in U.S.-listed holdings across 4 positions for Q1 2021.
The portfolio is heavily concentrated: WORK alone accounts for 39.8% of reported value.
Compared with Q4 2020, the fund opened 1 new position and exited 2.
Portfolio Metrics
Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded, with multiple share classes and repeated sub-manager rows for the same issuer combined into one position — the same rule the holdings table uses by default. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.
Reported Value by Quarter
Portfolio Composition
- Common Stock · 100.0% · $8M
Quarter-over-Quarter Changes full breakdown →
vs Q4 2020 (amended baseline)
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| ALXNALEXION PHARMACEUTICALS INC | NEW | +4.5K | 4.5K | +$688,000 | $688,000 |
| BIOTELEMETRY INC | SOLD OUT | −9.8K | 0 | −$706,000 | $0 |
| CARDTRONICS PLC | SOLD OUT | −18.3K | 0 | −$648,000 | $0 |
| RPREALPAGE INC | TRIMMED | −15.6K | 24.0K | −$1M | $2M |
| WTWWILLIS TOWERS WATSON PLC LTD | HELD | +0 | 9.9K | +$181,000 | $2M |
| WORKSLACK TECHNOLOGIES INC | HELD | +0 | 82.2K | −$132,000 | $3M |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q1 2021
| # | Issuer | Class | % Portfolio | Value ↓ | Shares |
|---|---|---|---|---|---|
| 1 | WORKSLACK TECHNOLOGIES INChistory → | COM CL A | 39.79% | $3M | 82.2K |
| 2 | WTWWILLIS TOWERS WATSON PLC LTDhistory → | SHS | 27.08% | $2M | 9.9K |
| 3 | RPREALPAGE INChistory → | COM | 24.94% | $2M | 24.0K |
| 4 | ALXNALEXION PHARMACEUTICALS INChistory → | COM | 8.20% | $688,000 | 4.5K |
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q3 2025 | $33M | 16 | Nov 12, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $34M | 15 | Aug 7, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $28M | 16 | May 7, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $17M | 15 | Feb 7, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2021 | $0 | 1 | Nov 15, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q2 2021 | $1M | 1 | Aug 16, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q1 2021 | $8M | 4 | May 17, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q4 2020 | Under review | 5 | Feb 16, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q3 2020 | $133,000 | 1 | Nov 16, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q2 2020 | $418,000 | 1 | Aug 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q1 2020 | $8M | 3 | May 15, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | $30M | 13 | Feb 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | $31M | 13 | Nov 14, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $12M | 4 | Aug 14, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $16M | 7 | May 15, 2019 | 13F-HR | changes · EDGAR ↗ |
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.