DOSSIER · 13F Holders · Q3 2026

ALFEN NV

1 institutions still hold ALFEN NV as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 178983253·1 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$1M
visible holders
Holders
1
filers reporting
Concentration
100.00%
ESSEX INVESTMENT MANAGEMENT CO LLC #1
top holder share
AI Holders Summary · Q3 2026

1 institutions reported ALFEN NV in Q3 2026. ESSEX INVESTMENT MANAGEMENT CO LLC leads at 100.0% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
ESSEX INVESTMENT MANAGEMENT CO LLC
CIK 0000201772
$1M81K0.17%Q3 2026