Gem Investment Advisors, LLC — 13F Holdings & Portfolio
CIK 1580018 · latest 13F-HR filed 2026-08-11
Gem Investment Advisors, LLC manages $163.1M in 13F-reported U.S. long-equity assets across 36 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are GTX (22.10%), ABSI (15.43%), DRTS (11.06%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 2 new positions and exited 1; 21 existing positions rose in reported value and 7 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 2026-08-11
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 = 80.1%Cumulative share of the portfolio held in the largest N positions.
14TH FLOOR
CHICAGO, IL 60611-6550
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| ATRIUM GEM PARTNERS GP, LLC Control | GENERAL PARTNER | General partner | Domestic Entity |
| ATRIUM GEM PARTNERS LP Control | LIMITED PARTNER | 75% or more | Domestic Entity |
| BAM 2019 FAMILY INSURANCE TRUST Control | PARTNER | 25–50% | Domestic Entity |
| ELRAD, MICHAEL, ANDREW Control | SENIOR MANAGING PARTNER | Less than 5% | Individual |
| GELLER, NORMAN, SCOTT Control | SENIOR MANAGING PARTNER | Less than 5% | Individual |
| GEM SPECIAL MM, LLC Control | GENERAL PARTNER | Less than 5% | Domestic Entity |
| MALKIN, BARRY, ALAN Control | SENIOR ADVISOR | Less than 5% | Individual |
| MALKIN, BARRY, ALAN Control | TRUSTEE | General partner | Individual |
| MALKIN, STEPHEN, JAY Control | CO-TRUSTEE | General partner | Individual |
| RANGER CAPITAL MANAGEMENT, L.P. Control | LIMITED PARTNER | 25–50% | Domestic Entity |
| SACKS, MICHAEL, JAY Control | CO-TRUSTEE | General partner | Individual |
| SJM 2019 FAMILY INSURANCE TRUST Control | PARTNER | 25–50% | Domestic Entity |
| Franklin, Andrew, Michael | CHIEF FINANCIAL OFFICER AND CO-CHIEF OPERATING OFFICER | Less than 5% | Individual |
| GELLER, MICHAEL, JACOB | CO-CHIEF INVESTMENT OFFICER - GRS | Less than 5% | Individual |
| HELLEBUSCH, LOUIS, DOMINIC | GENERAL COUNSEL AND CHIEF COMPLIANCE OFFICER | Less than 5% | Individual |
| KEIGHER, ELIZABETH, ANN | CO-CHIEF OPERATING OFFICER | Less than 5% | Individual |
| Lopez, Derek, Paul | CHIEF INVESTMENT OFFICER - GRP | Less than 5% | Individual |
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)
- ABSCI CORPORATION$18.6M +286.3%
- GARRETT MOTION INC$17.6M +95.0%
- ALPHA TAU MEDICAL LTD$17.2M +2144.2%
- QUIDELORTHO CORP$5.0M +103.4%
- ORAMED PHARMACEUTICALS INC$4.0M +72.4%
Top Trims
- GRAYSCALE BITCOIN MINI TR ET-$3.3M -75.3%
- LARIMAR THERAPEUTICS INC-$2.9M -74.6%
- SPROTT ASSET MANAGEMENT LP-$1.4M -15.7%
- CF INDUSTRIES HOLD-$1.1M -16.6%
- BLACK STONE MINERALS L P-$97.3K -7.6%
Gem Investment Advisors, 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 | GARRETT MOTION INC | GTX | 366505105 | $36.0M | 22.10% | 994,885 | SH |
| 2 | ABSCI CORPORATION | ABSI | 00091E109 | $25.2M | 15.43% | 2,170,863 | SH |
| 3 | ALPHA TAU MEDICAL LTD | DRTS | M0740A108 | $18.0M | 11.06% | 1,434,476 | SH |
| 4 | QUIDELORTHO CORP | QDEL | 219798105 | $9.9M | 6.08% | 565,998 | SH |
| 5 | ORAMED PHARMACEUTICALS INC | ORMP | 68403P203 | $9.6M | 5.89% | 1,998,802 | SH |
| 6 | SPROTT ASSET MANAGEMENT LP | CEF | 85208R101 | $7.5M | 4.63% | 187,561 | SH |
| 7 | PDF SOLUTIONS INC | PDFS | 693282105 | $7.5M | 4.58% | 105,526 | SH |
| 8 | TEJON RANCH CO | TRC | 879080109 | $5.8M | 3.55% | 309,985 | SH |
| 9 | SOTERA HEALTH CO | SHC | 83601L102 | $5.6M | 3.42% | 314,015 | SH |
| 10 | CF INDUSTRIES HOLD | CF | 125269100 | $5.4M | 3.32% | 50,000 | SH |
| 11 | STRIDE INC | LRN | 86333M108 | $5.3M | 3.25% | 61,563 | SH |
| 12 | ST JOE CO | JOE | 790148100 | $5.1M | 3.12% | 81,142 | SH |
| 13 | PURE CYCLE CORP | PCYO | 746228303 | $4.8M | 2.95% | 449,829 | SH |
| 14 | GRAIL INC | GRAL | 384747101 | $1.8M | 1.12% | 26,781 | SH |
| 15 | SECURITY NATL FINL CORP | SNFCA | 814785309 | $1.5M | 0.94% | 158,171 | SH |
| 16 | U HAUL HOLDING COMPANY | UHAL.B | 023586506 | $1.5M | 0.92% | 26,070 | SH |
| 17 | NANO DIMENSION LTD | NNDM | 63008G203 | $1.4M | 0.89% | 1,000,000 | SH |
| 18 | RIMINI STR INC DEL | RMNI | 76674Q107 | $1.4M | 0.87% | 334,657 | SH |
| 19 | STAR HLDGS | STHO | 85512G106 | $1.3M | 0.77% | 137,884 | SH |
| 20 | BLACK STONE MINERALS L P | BSM | 09225M101 | $1.2M | 0.72% | 84,632 | SH |
| 21 | COURSERA INC | COUR | 22266M104 | $1.1M | 0.69% | 200,043 | SH |
| 22 | GRAYSCALE BITCOIN MINI TR ET | BTC | 389930207 | $1.1M | 0.66% | 41,617 | SH |
| 23 | LARIMAR THERAPEUTICS INC | LRMR | 517125100 | $974.5K | 0.60% | 319,519 | SH |
| 24 | SEAPORT ENTMT GROUP INC | SEG | 812215200 | $745.1K | 0.46% | 28,012 | SH |
| 25 | ANTERIX INC | ATEX | 03676C100 | $739.4K | 0.45% | 7,183 | SH |
| 26 | ABEONA THERAPEUTICS INC | ABEO | 00289Y206 | $612.3K | 0.38% | 99,084 | SH |
| 27 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $399.8K | 0.25% | 799 | SH |
| 28 | ARRAY DIGITAL INFRASTRUCTURE | AD | 911684108 | $269.7K | 0.17% | 7,439 | SH |
| 29 | DRIVEN BRANDS HLDGS INC | DRVN | 26210V102 | $266.7K | 0.16% | 19,133 | SH |
| 30 | LATHAM GROUP INC | SWIM | 51819L107 | $241.6K | 0.15% | 37,338 | SH |
| 31 | FORTREA HLDGS INC | FTRE | 34965K107 | $239.2K | 0.15% | 13,747 | SH |
| 32 | USA TODAY CO INC | TDAY | 36472T109 | $193.5K | 0.12% | 22,632 | SH |
| 33 | QUIDELORTHO CORP Call | QDEL | 219798105 | $92.8K | 0.06% | 5,300 | SH |
| 34 | FIVE POINT HOLDINGS LLC | FPH | 33833Q106 | $71.5K | 0.04% | 13,574 | SH |
| 35 | ACACIA RESH CORP | ACTG | 003881307 | $52.4K | 0.03% | 11,250 | SH |
| 36 | ENTERA BIO LTD | ENTX | M40527109 | $33.9K | 0.02% | 19,135 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-11 | $163.1M | 36 | 0001580018-26-000006 |
| 2026-03-31 | 2026-05-15 | $101.7M | 35 | 0001580018-26-000004 |
| 2025-12-31 | 2026-05-15 | $105.5M | 32 | 0001580018-26-000003 |
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