Portolan Capital Management, LLC
CIK 1350290 · Holdings on Mar 31, 2025 · First reported May 15, 2025
Top ten holdings
Q1 2025- LNTH6.43%
- SLM3.38%
- KTOS3.30%
- GENI3.26%
- MOD2.88%
- FOUR2.52%
- EBAY2.44%
- G391081082.42%
- CLS2.35%
- HNST1.97%
Share classes counted separately30.95%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- SLMWeight increased · +1.71 pp1.67% → 3.38%Shares +611.75K (+67.93%)
- LNTHWeight increased · +1.54 pp4.89% → 6.43%Shares +54.68K (+6.73%)
- FOURWeight increased · +1.54 pp0.98% → 2.52%Shares +265.53K (+188.36%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 30
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | LNTHLANTHEUS HOLDINGS INC View history and evidence | $84.65M | 6.43% | 867.31K shares | 4.89% → 6.43%+1.54 pp +54.68K (+6.73%) | Added | ↗▾ |
| 02 | SLMSLM CORP View history and evidence | $44.42M | 3.38% | 1.51M shares | 1.67% → 3.38%+1.71 pp +611.75K (+67.93%) | Added | ↗▾ |
| 03 | KTOSKRATOS DEFENSE & SECURITYCOM NEW View history and evidence | $43.37M | 3.30% | 1.46M shares | 2.39% → 3.30%+0.91 pp +112.65K (+8.36%) | Added | ↗▾ |
| 04 | GENIGENIUS SPORTS LTDSHARES CL A View history and evidence | $42.86M | 3.26% | 4.28M shares | 1.79% → 3.26%+1.47 pp +1.21M (+39.47%) | Added | ↗▾ |
| 05 | MODMODINE MANUFACTURING CO View history and evidence | $37.88M | 2.88% | 493.57K shares | 2.56% → 2.88%+0.32 pp +164.68K (+50.07%) | Added | ↗▾ |
| 06 | FOURSHIFT4 PAYMENTS INC-CLASS ACL A View history and evidence | $33.22M | 2.52% | 406.50K shares | 0.98% → 2.52%+1.54 pp +265.53K (+188.36%) | Added | ↗▾ |
| 07 | EBAYEBAY INC View history and evidence | $32.15M | 2.44% | 474.66K shares | 0.99% → 2.44%+1.45 pp +236.53K (+99.33%) | Added | ↗▾ |
| 08 | G39108108GATES INDL CORP PLCORD SHS View history and evidence | $31.88M | 2.42% | 1.73M shares | 1.55% → 2.42%+0.87 pp +614.17K (+54.97%) | Added | ↗▾ |
| 09 | CLSCELESTICA INC View history and evidence | $30.97M | 2.35% | 392.92K shares | 3.89% → 2.35%-1.54 pp -234.02K (-37.33%) | Reduced | ↗▾ |
| 10 | HNSTHONEST CO INC/THE View history and evidence | $25.94M | 1.97% | 5.52M shares | 2.50% → 1.97%-0.53 pp +160.21K (+2.99%) | Added | ↗▾ |
Options overlay 0
No options reported this quarter.
Exited positions 43
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| SNAP SNAP INC - A | Non-derivative | -2,362,784 | -$25.45M | SEC filing ↗ | SEC filing ↗ |
| CORZ CORE SCIENTIFIC INC | Non-derivative | -1,025,508 | -$14.41M | SEC filing ↗ | SEC filing ↗ |
| AAOI APPLIED OPTOELECTRONICS INC | Non-derivative | -336,907 | -$12.42M | SEC filing ↗ | SEC filing ↗ |
3 / 43 preview exits. Up to 30 exit records are previewed. Exit means absent from the current filing; execution date, price and proceeds are unknown.
Every number has a source.
CIK 1350290 · Period 2025-03-31
Data loaded 2026-09-23 · First reported 2025-05-15
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 1315774017
}Research all 109 reported holdings.
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