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Semanteon Capital Management, LP — 13F Holdings & Portfolio

CIK 1738809 · latest 13F-HR filed 2026-08-12

Backtest portfolio

Semanteon Capital Management, LP manages $22.2M in 13F-reported U.S. long-equity assets across 100 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are PL (1.23%), APH (1.19%), AMD (1.19%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 83 new positions and exited 25; 12 existing positions rose in reported value and 3 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.

Loading holdings…
AUM
$22.2M

Long-equity book

Holdings
100

Distinct positions

Period
2026-06-30

Filed 2026-08-12

Q/Q Activity
+83 / −25 / ↑12 / ↓3

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26
PL1.2% · newAPH1.2% · newAMD1.2% · newKRNY1.2% · +7%LOCO1.2% · +25%WSO1.2% · newCARE1.2% · newSKYW1.1% · newHEI1.1% · newNRIM1.1% · newSYY1.1% · newAYI1.1% · newFMAO1.1% · newSMBK1.1% · newRPM1.1% · newGH1.1% · newOOMA1.1% · +26%PLOW1.1% · newCMG1.1% · newAUR1.1% · newCOFS1.1% · newCHMG1.1% · newCAH1.1% · newIAG1.1% · +38%MTZ1.1% · -5%JKHY1.1% · newXPEL1.1% · newACNB1.1% · newTR1.1% · newTMO1.1% · newDCI1.1% · newBBCP1.1% · newTECK1.1% · +5%GOOG1.1% · -3%SFST1.1% · newHPE1.1% · newNGS1.1% · newSENEA1.1% · newKEYS1.1% · -5%CHDN1.1% · newTGTX1.1% · newUNTY1.1% · newEFOR1.1% · newDAKT1.1% · newOZK1.1% · newLFST1.1% · newBR1.1% · newFFIN1.1% · newCSTM1.1% · newTXN1.0% · newLRN1.0% · newNTR1.0% · newBRK.B1.0% · newTTD1.0% · newNVT1.0% · newCLX1.0% · newIMKTA1.0% · newBHB1.0% · newNWS1.0% · +13%VMD1.0% · new

Box 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 value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated 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

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 11.7%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Mar 1, 2026.

Address
580 WASHINGTON ST.
SUITE C
NEWTON, MA 02458
Phone
(617) 213-0162
Website
Name Title / Status Ownership Type
Lal, Rajat ControlMANAGING PARTNER
since Jun 2017
50–75%Individual
SEMANTEON GP, LLC ControlGENERAL PARTNER
since Jun 2017
Less than 5%Domestic Entity
UZDELEWICZ, WOJCIECH ControlPARTNER AND CHIEF COMPLIANCE OFFICER
since Oct 2017
25–50%Individual
Lal, Rajat Control
Indirect owner via SEMANTEON GP, LLC
MANAGING MEMBER
since Jun 2017
50–75%Individual
UZDELEWICZ, WOJCIECH Control
Indirect owner via SEMANTEON GP, LLC
MEMBER
since Oct 2017
25–50%Individual
Ownership & leadership changes · 6 filings with changes since Oct 17, 2017

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

May 24, 2024 filing
  • No longer listedRAJAT LAL, LLC · MANGING MEMBER OF SEMANTEON CAPITAL PARTNERS, LLC · 50–75% · control person · listed since Oct 2017
  • ChangedLal, Rajat · title LIMITED PARTNER → MANAGING PARTNER
  • ChangedUZDELEWICZ, WOJCIECH · title LIMITED PARTNER / MEMBER OF SEMANTEON CAPITAL PARTNERS, LLC → PARTNER AND CHIEF COMPLIANCE OFFICER
Mar 29, 2024 filing
  • No longer listedPLANK 2010 FAMILY TRUST · MEMBER · General partner, trustee or manager · indirect via SEMANTEON GP, LLC · control person · listed since Oct 2017
Mar 14, 2023 filing
  • No longer listedKASUMOVICH, MARCEL, JOHN · PRESIDENT / OWNER · 50–75% · indirect via PURE MACRO HOLDINGS INC. · control person · listed since Mar 2020
  • No longer listedPLANK 2010 FAMILY TRUST · LIMITED PARTNER / MEMBER OF SEMANTEON CAPITAL PARTNERS, LLC · Less than 5% · control person · listed since Oct 2017
  • No longer listedPLANKESTES, JULIE, ANN · TRUSTEE · General partner, trustee or manager · indirect via PLANK 2010 FAMILY TRUST · control person · listed since Oct 2017
  • No longer listedPURE MACRO HOLDINGS INC. · LIMITED PARTNER · Less than 5% · listed since Nov 2020
  • No longer listedUrsu, Heather · OWNER · 50–75% · indirect via PURE MACRO HOLDINGS INC. · control person · listed since Mar 2020
Mar 18, 2022 filing
  • No longer listedLal, Rajat · MANAGING MEMBER · 75% or more · indirect via RAJAT LAL LLC · control person · listed since Jun 2017
  • No longer listedRAJAT LAL LLC · MANAGING MEMBER · 25–50% · indirect via SEMANTEON GP, LLC · control person · listed since Oct 2017
  • AddedLal, Rajat · MANAGING MEMBER · 50–75% · indirect via SEMANTEON GP, LLC · control person
  • ChangedLal, Rajat · ownership 25–50% → 50–75%
  • ChangedPLANK 2010 FAMILY TRUST · ownership 25–50% → Less than 5%
  • ChangedPLANK 2010 FAMILY TRUST · indirect via SEMANTEON GP, LLC: ownership 25–50% → General partner, trustee or manager
  • ChangedRAJAT LAL, LLC · ownership 25–50% → 50–75%
Mar 26, 2021 filing
  • AddedKASUMOVICH, MARCEL, JOHN · PRESIDENT / OWNER · 50–75% · indirect via PURE MACRO HOLDINGS INC. · control person
  • AddedPURE MACRO HOLDINGS INC. · LIMITED PARTNER · Less than 5%
  • AddedUrsu, Heather · OWNER · 50–75% · indirect via PURE MACRO HOLDINGS INC. · control person
Mar 28, 2018 filing
  • AddedRAJAT LAL, LLC · MANGING MEMBER OF SEMANTEON CAPITAL PARTNERS, LLC · 25–50% · control person
  • ChangedPLANK 2010 FAMILY TRUST · title LIMITED PARTNER → LIMITED PARTNER / MEMBER OF SEMANTEON CAPITAL PARTNERS, LLC
  • ChangedUZDELEWICZ, WOJCIECH · title LIMITED PARTNER → LIMITED PARTNER / MEMBER OF SEMANTEON CAPITAL PARTNERS, LLC
Oct 17, 2017 filing (earliest on record)
  • ListedLal, Rajat · LIMITED PARTNER · 25–50% · control person
  • ListedLal, Rajat · MANAGING MEMBER · 75% or more · indirect via RAJAT LAL LLC · control person
  • ListedPLANK 2010 FAMILY TRUST · LIMITED PARTNER · 25–50% · control person
  • ListedPLANK 2010 FAMILY TRUST · MEMBER · 25–50% · indirect via SEMANTEON GP, LLC · control person
  • ListedPLANKESTES, JULIE, ANN · TRUSTEE · General partner, trustee or manager · indirect via PLANK 2010 FAMILY TRUST · control person
  • ListedRAJAT LAL LLC · MANAGING MEMBER · 25–50% · indirect via SEMANTEON GP, LLC · control person
  • ListedSEMANTEON GP, LLC · GENERAL PARTNER · Less than 5% · control person
  • ListedUZDELEWICZ, WOJCIECH · LIMITED PARTNER · 25–50% · control person
  • ListedUZDELEWICZ, WOJCIECH · MEMBER · 25–50% · indirect via SEMANTEON GP, LLC · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Semanteon Capital Management, LP 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 PLANET LABS PBC PL 72703X106 $273.0K 1.23% 8,239 SH
2 AMPHENOL CORP NEW APH 032095101 $264.5K 1.19% 1,500 SH
3 ADVANCED MICRO DEVICES INC AMD 007903107 $262.6K 1.19% 452 SH
4 KEARNY FINL CORP MD KRNY 48716P108 $260.2K 1.17% 27,505 SH
5 EL POLLO LOCO HLDGS INC LOCO 268603107 $259.8K 1.17% 15,319 SH
6 WATSCO INC WSO 942622200 $258.0K 1.16% 619 SH
7 CARTER BANKSHARES INC CARE 146103106 $257.1K 1.16% 7,560 SH
8 SKYWEST INC SKYW 830879102 $254.9K 1.15% 2,566 SH
9 HEICO CORP NEW HEI 422806109 $253.6K 1.14% 712 SH
10 NORTHRIM BANCORP INC NRIM 666762109 $253.2K 1.14% 9,127 SH
11 SYSCO CORP SYY 871829107 $252.7K 1.14% 3,024 SH
12 ACUITY BRANDS INC AYI 00508Y102 $252.4K 1.14% 670 SH
13 FARMERS & MERCHANTS BANCORP FMAO 30779N105 $252.3K 1.14% 8,252 SH
14 SMARTFINANCIAL INC SMBK 83190L208 $251.3K 1.13% 5,356 SH
15 RPM INTL INC RPM 749685103 $251.0K 1.13% 2,258 SH
16 GUARDANT HEALTH INC GH 40131M109 $250.8K 1.13% 1,672 SH
17 OOMA INC OOMA 683416101 $250.5K 1.13% 13,035 SH
18 DOUGLAS DYNAMICS INC PLOW 25960R105 $250.4K 1.13% 4,641 SH
19 CHIPOTLE MEXICAN GRILL INC CMG 169656105 $249.7K 1.13% 7,343 SH
20 AURORA INNOVATION INC AUR 051774107 $249.4K 1.13% 36,567 SH
21 CHOICEONE FINL SVCS INC COFS 170386106 $249.3K 1.13% 7,331 SH
22 CHEMUNG FINL CORP CHMG 164024101 $249.0K 1.12% 3,339 SH
23 CARDINAL HEALTH INC CAH 14149Y108 $247.1K 1.12% 1,040 SH
24 IAMGOLD CORP IAG 450913108 $246.8K 1.11% 15,579 SH
25 MASTEC INC MTZ 576323109 $246.7K 1.11% 593 SH
26 HENRY JACK & ASSOC INC JKHY 426281101 $246.0K 1.11% 1,786 SH
27 XPEL INC XPEL 98379L100 $244.8K 1.11% 4,936 SH
28 ACNB CORP ACNB 000868109 $244.7K 1.10% 4,121 SH
29 TOOTSIE ROLL INDS INC TR 890516107 $244.0K 1.10% 6,170 SH
30 THERMO FISHER SCIENTIFIC INC TMO 883556102 $243.2K 1.10% 485 SH
31 DONALDSON INC DCI 257651109 $242.9K 1.10% 2,706 SH
32 CONCRETE PUMPING HLDGS INC BBCP 206704108 $242.9K 1.10% 20,157 SH
33 TECK RESOURCES LTD TECK 878742204 $240.9K 1.09% 4,051 SH
34 ALPHABET INC GOOG 02079K107 $239.6K 1.08% 678 SH
35 SOUTHERN FIRST BANCSHARES SFST 842873101 $237.3K 1.07% 3,883 SH
36 HEWLETT PACKARD ENTERPRISE C HPE 42824C109 $237.0K 1.07% 5,253 SH
37 NATURAL GAS SVCS GROUP INC NGS 63886Q109 $235.9K 1.06% 5,468 SH
38 SENECA FOODS CORP NEW SENEA 817070501 $235.9K 1.06% 1,356 SH
39 KEYSIGHT TECHNOLOGIES INC KEYS 49338L103 $235.6K 1.06% 673 SH
40 CHURCHILL DOWNS INC CHDN 171484108 $235.6K 1.06% 2,628 SH
41 TG THERAPEUTICS INC TGTX 88322Q108 $234.9K 1.06% 4,275 SH
42 UNITY BANCORP INC UNTY 913290102 $234.3K 1.06% 3,992 SH
43 ASGN INC EFOR 00191U102 $234.2K 1.06% 13,103 SH
44 DAKTRONICS INC DAKT 234264109 $233.8K 1.06% 11,955 SH
45 BANK OZK LITTLE ROCK ARK OZK 06417N103 $233.4K 1.05% 4,480 SH
46 LIFESTANCE HEALTH GROUP INC LFST 53228F101 $233.3K 1.05% 21,784 SH
47 BROADRIDGE FINL SOLUTIONS IN BR 11133T103 $233.1K 1.05% 1,702 SH
48 FIRST FINL BANKSHARES INC FFIN 32020R109 $232.8K 1.05% 6,729 SH
49 CONSTELLIUM SE CSTM F21107101 $232.6K 1.05% 7,299 SH
50 TEXAS INSTRS INC TXN 882508104 $232.5K 1.05% 780 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-12 $22.2M 100 0001738809-26-000005
2026-03-31 2026-05-11 $7.5M 42 0001738809-26-000003
2025-12-31 2026-02-10 $746.3K 8 0002085853-26-000232
2025-09-30 2025-11-10 $79.7M 173 0002085853-25-000245
Filer Information
Address
580 WASHINGTON ST., SUITE C
NEWTON, MA 02458
Phone
(617) 213-0162
Filing Manager
Semanteon Capital Management, LP
NEWTON, MA
Signatory
Rajat Lal
Managing Member of General Partner