Arkolith/Funds/Samjo Management, LLC

Samjo Management, LLC

CIK 1986590
Holdings as of Mar 31, 2026·disclosed May 15, 2026·~45-day 13F lag·13F-HR
Active Filer

Samjo Management, LLC holds a focused book of 55 stocks worth $231.3M as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter they opened AstraZeneca PLC and trimmed PDF Solutions Inc. Their largest long position is PDF Solutions Inc at 13% of the equity book.

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holdings, largest changes, and filing provenance.
Opened
6
new positions
Added to
13
existing
Trimmed
26
reduced
Sold out
6
exited

Concentration

Top-heavy: focused book

Top 5 holdings
40%
Top 10 holdings
57%
Top 20 holdings
77%

Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.

Direct sector allocation

100% mapped to company sectors

Information Technology
42%
Industrials
10%
Financials
10%
Consumer Discretionary
10%
Health Care
7%
Utilities
6%
Communication Services
5%
Energy
5%

Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.

Biggest moves: latest quarter

Estimated $ traded · quarter-end prices, no cost basis

Bought
Trimmed / exited

Holdings: largest first

Bars show each stock's share of the portfolio. Click a row for its position history.

55 positions
#SecurityValueShares% PortLast moveHistory
1PDF Solutions Inc
COM
$30.1M920.0K
13.0%
−20%
Reduced · −231K sh
2Arteris Inc
COM
$18.8M1.14M
8.1%
+11%
Added · +117K sh
3Genius Sports Limited
SHARES CL A
$16.6M3.75M
7.2%
+90%
Added · +1.8M sh
4Inspired Entmt Inc
COM
$14.5M2.03M
6.3%
+16%
Added · +285K sh
5Powerfleet Inc
COM
$12.3M3.99M
5.3%
+15%
Added · +511K sh
6SLB Limited
COM STK
$11.6M225.7K
5.0%
−1.2%
Reduced · −3K sh
7Cognyte Software Ltd
ORD SHS
$7.8M958.8K
3.4%
+7.0%
Added · +63K sh
8Zeta Global Holdings Corp
CL A
$7.7M486.6K
3.3%
−7.5%
Reduced · −40K sh
9Berkshire Hathaway Inc Del
CL B NEW
$7.3M15.2K
3.1%
+2.8%
Added · +410 sh
10Qxo Inc
COM NEW
$6.1M316.4K
2.7%
−6.2%
Reduced · −21K sh
11Kinder Morgan Inc Del
COM
$6.1M180.6K
2.6%
−1.3%
Reduced · −2K sh
12Rimini STR Inc Del
COM
$5.4M1.65M
2.3%
+37%
Added · +444K sh
13Ridgepost Cap Inc
CL A COM
$5.1M699.6K
2.2%
+37%
Added · +189K sh
14AstraZeneca PLC
ORD
$4.8M24.7K
2.1%
New
New position
15Ranpak Holdings Corp
COM CL A
$4.8M1.33M
2.1%
+104%
Added · +677K sh
16Par Technology Corp
COM
$4.1M308.0K
1.8%
New
New position
17Emerson Elec Co
COM
$3.9M29.8K
1.7%
−19%
Reduced · −7K sh
18Apollo Global Mgmt Inc
COM
$3.8M34.4K
1.7%
−0.1%
Reduced · −50 sh
19KKR & Co Inc
COM
$3.5M38.2K
1.5%
−0.1%
Reduced · −30 sh
20Johnson & Johnson
COM
$3.4M14.0K
1.5%
−4.9%
Reduced · −720 sh
21RTX Corporation
COM
$3.4M17.5K
1.5%
−9.4%
Reduced · −2K sh
22Mdxhealth Sa
SHS NEW
$3.3M1.45M
1.4%
+3.8%
Added · +54K sh
23Rocket Cos Inc
COM CL A
$3.2M224.8K
1.4%
+11%
Added · +22K sh
24Deere & Co
COM
$3.2M5.6K
1.4%
−12%
Reduced · −795 sh
25Walmart Inc
COM
$2.9M23.4K
1.3%
−7.2%
Reduced · −2K sh
26Qnity Electronics Inc
COMMON STOCK
$2.7M23.2K
1.2%
−20%
Reduced · −6K sh
27Neogen Corp
COM
$2.7M287.5K
1.2%
−39%
Reduced · −185K sh
28Neogenomics Inc
COM NEW
$2.3M316.7K
1.0%
+11%
Added · +31K sh
29Aspen Aerogels Inc
COM
$2.2M645.6K
1.0%
−19%
Reduced · −153K sh
30Ambarella Inc
SHS
$2.1M41.6K
0.9%
New
New position
31Starbucks Corp
COM
$1.9M21.3K
0.8%
~0%
Reduced · −10 sh
32Enterprise Prods Partners L
COM
$1.9M50.1K
0.8%
Held
33Constellation Energy Corp
COM
$1.7M6.1K
0.7%
Held
34Pfizer Inc
COM
$1.7M59.6K
0.7%
−0.8%
Reduced · −500 sh
35Blend Labs Inc
CL A
$1.7M982.5K
0.7%
New
New position
36Waste Mgmt Inc Del
COM
$1.5M6.7K
0.7%
New
New position
37Williams Cos Inc
COM
$1.5M20.8K
0.7%
+5.1%
Added · +1K sh
38Primo Brands Corporation
CLASS A COM SHS
$1.5M78.5K
0.6%
−71%
Reduced · −195K sh
39Dupont De Nemours Inc
COM
$1.4M31.0K
0.6%
~0%
Reduced · −10 sh
40Microsoft Corp
COM
$1.4M3.6K
0.6%
−29%
Reduced · −2K sh
41Exelon Corp
COM
$1.3M26.6K
0.6%
Held
42Xylem Inc
COM
$1.1M9.5K
0.5%
−44%
Reduced · −7K sh
43Daktronics Inc
COM
$1.1M57.5K
0.5%
New
New position
44Procter & Gamble Co
COM
$1.1M7.7K
0.5%
−24%
Reduced · −2K sh
45Energy Transfer L P
COM UT LTD PTN
$772K40.0K
0.3%
Held
46Corteva Inc
COM
$725K8.7K
0.3%
Held
47Blackstone Inc
COM
$634K5.5K
0.3%
−35%
Reduced · −3K sh
48Dow Hldgs Inc
COM
$542K13.0K
0.2%
Held
49Alphabet Inc
CAP STK CL A
$474K1.6K
0.2%
−2.9%
Reduced · −50 sh
50Alphabet Inc
CAP STK CL C
$473K1.6K
0.2%
−2.9%
Reduced · −50 sh
Showing 50 of 55 positions

Filing history

As-of date vs the date the SEC received each filing

QuarterAs ofFiledPositionsValueForm
Q1 2026Mar 31, 2026May 15, 202684$231.3M13F-HR
Q4 2025Dec 31, 2025Feb 17, 202685$258.7M13F-HR/A
Q3 2025Sep 30, 2025Nov 13, 202586$261.8M13F-HR
Amended / restated
  • Q4 2025 · filed Feb 13, 202613F-HR · superseded

Data source

Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.