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Oak Grove Capital LLC — 13F Holdings & Portfolio

CIK 1661762 · latest 13F-HR filed 2026-10-09

Backtest portfolio

Oak Grove Capital LLC manages $2.21B in 13F-reported U.S. long-equity assets across 341 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are MU (17.27%), NVDA (10.35%), NBIS (4.55%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 11 new positions and exited 4; 43 existing positions rose in reported value and 29 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.

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AUM
$2.21B

Long-equity book

Holdings
341

Distinct positions

Period
2026-09-30

Filed 2026-10-09

Q/Q Activity
+11 / −4 / ↑43 / ↓29

vs 2026-06-30

Portfolio charts

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

Portfolio map

Q3 26
MU22.8% · +35%NVDA13.6% · +19%NBIS6.0% · +51%AMD5.8% · +40%LLY2.7% · +61%CRWD2.5% · +294%COHR2.3% · +6%BEP2.0% · +72%GOOGL2.0% · +12%AAPL1.9% · +13%DUK1.9% · +31%VST1.9% · +13%BN1.8% · +15%LITE1.7% · +134%DVN1.7% · +6%EQT1.7% · +23%BIPC1.6% · +5%MRK1.4% · +1%IBM1.4% · +1%DRAM1.2% · +32%INTC1.2% · +257%ET1.1% · +5%AAOI1.1% · +12%COST1.1% · -0%D1.0% · +0%NFLX1.0% · -13%ABBV1.0% · +38%SKHY0.9% · newKMI0.8% · +4%BEPC0.7% · -9%VRT0.7% · +13%ALAB0.7% · -13%CEG0.7% · +17%AVGO0.7% · +3245%NOW0.7% · +22%ASML0.6% · +55%FCX0.6% · +492%GEV0.6% · +252%SRE0.5% · +2%WMB0.4% · +204%MSFT0.4% · +14%LVHI0.4% · +44%META0.4% · -9%TSM0.3% · -7%LRCX0.3% · +3%NEM0.3% · +236%TSLA0.3% · -0%BRK.B0.2% · +12%NASA0.2% · +0%VGSH0.2% · -3%BIP0.2% · newPANW0.2% · newLNG0.1% · +4%BE0.1% · +85%MINT0.1% · 0%JPM0.1% · -10%PPL0.1% · +35%NOK0.1% · +203%NOC0.1% · 0%GOOG0.1% · +6%

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

Q2 26 → Q3 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

5 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 = 61.8%

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

Firm Profile & Key People
Assets Under Management
$871.0M
Discretionary
$871.0M
Employees
2
Accounts
346
Phone
(412) 515-8899
Website
Mailing Address
BOX 222, HOLDERNESS, NH, 03245
Name Title / Status Ownership Type
VISNIC, MARK, GEORGE ControlMANAGING MEMBER, CHIEF COMPLIANCE OFFICER75% or moreIndividual

Quarter-over-quarter changes

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

Oak Grove Capital LLC Holdings (2026-09-30)

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 MICRON TECHNOLOGY INC MU 595112103 $381.8M 17.27% 358,415 SH
2 NVIDIA CORPORATION NVDA 67066G104 $228.9M 10.35% 1,002,321 SH
3 NEBIUS GROUP N.V. NBIS N97284108 $100.6M 4.55% 426,543 SH
4 ADVANCED MICRO DEVICES INC AMD 007903107 $98.0M 4.43% 160,241 SH
5 ELI LILLY & CO LLY 532457108 $45.4M 2.05% 39,238 SH
6 CROWDSTRIKE HLDGS INC CRWD 22788C105 $42.6M 1.93% 160,888 SH
7 MICRON TECHNOLOGY INC Call MU 595112103 $41.1M 1.86% 38,600 SH
8 COHERENT CORP COHR 19247G107 $39.3M 1.78% 136,413 SH
9 BROOKFIELD RENEWABLE ENERGY BEP G16258108 $33.8M 1.53% 1,202,100 SH
10 ALPHABET INC GOOGL 02079K305 $33.7M 1.52% 97,936 SH
11 APPLE INC AAPL 037833100 $31.8M 1.44% 95,627 SH
12 DUKE ENERGY CORP NEW DUK 26441C204 $31.7M 1.44% 278,361 SH
13 VISTRA CORP VST 92840M102 $31.1M 1.40% 224,510 SH
14 BROOKFIELD CORP BN 11271J107 $30.5M 1.38% 835,459 SH
15 LUMENTUM HLDGS INC LITE 55024U109 $28.0M 1.27% 28,820 SH
16 DEVON ENERGY CORP NEW DVN 25179M103 $27.9M 1.26% 605,990 SH
17 EQT CORP EQT 26884L109 $27.9M 1.26% 574,125 SH
18 BROOKFIELD INFRASTRUCTURE CO BIPC 11276H106 $26.8M 1.21% 753,300 SH
19 MERCK & CO INC MRK 58933Y105 $23.3M 1.05% 160,388 SH
20 INTERNATIONAL BUSINESS MACHS IBM 459200101 $23.3M 1.05% 105,800 SH
21 ROUNDHILL ETF TRUST DRAM 77926X320 $20.3M 0.92% 335,950 SH
22 INTEL CORP INTC 458140100 $19.5M 0.88% 162,250 SH
23 ENERGY TRANSFER L P ET 29273V100 $18.6M 0.84% 943,209 SH
24 MICRON TECHNOLOGY INC Call MU 595112103 $18.1M 0.82% 17,000 SH
25 APPLIED OPTOELECTRONICS INC AAOI 03823U102 $17.8M 0.80% 178,900 SH
26 COSTCO WHOLESALE CORPORATION COST 22160K105 $17.6M 0.80% 19,363 SH
27 DOMINION ENERGY INC D 25746U109 $17.3M 0.78% 286,283 SH
28 NETFLIX INC. NFLX 64110L106 $16.5M 0.74% 236,595 SH
29 ABBVIE INC ABBV 00287Y109 $16.2M 0.73% 61,750 SH
30 SK HYNIX INC SKHY 78392B206 $15.8M 0.71% 85,800 SH
31 MICRON TECHNOLOGY INC Call MU 595112103 $14.4M 0.65% 13,500 SH
32 MICRON TECHNOLOGY INC Call MU 595112103 $14.3M 0.65% 13,400 SH
33 MICRON TECHNOLOGY INC Call MU 595112103 $13.3M 0.60% 12,500 SH
34 NVIDIA CORPORATION Call NVDA 67066G104 $13.3M 0.60% 58,100 SH
35 KINDER MORGAN INC DEL KMI 49456B101 $13.2M 0.60% 439,412 SH
36 NVIDIA CORPORATION Call NVDA 67066G104 $13.2M 0.60% 58,000 SH
37 BROOKFIELD RENEWABLE CORP BEPC 11285B108 $12.5M 0.56% 441,300 SH
38 VERTIV HOLDINGS CO VRT 92537N108 $12.4M 0.56% 51,469 SH
39 ASTERA LABS INC ALAB 04626A103 $12.1M 0.55% 34,040 SH
40 MICRON TECHNOLOGY INC Call MU 595112103 $12.0M 0.54% 11,300 SH
41 CONSTELLATION ENERGY CORP CEG 21037T109 $11.8M 0.53% 46,550 SH
42 NVIDIA CORPORATION Call NVDA 67066G104 $11.8M 0.53% 51,700 SH
43 BROADCOM INC AVGO 11135F101 $11.4M 0.51% 32,344 SH
44 SERVICENOW INC NOW 81762P102 $11.1M 0.50% 83,075 SH
45 NVIDIA CORPORATION Call NVDA 67066G104 $10.7M 0.48% 46,700 SH
46 ASML HLDG NV ASML N07059210 $10.5M 0.48% 5,810 SH
47 MICRON TECHNOLOGY INC Call MU 595112103 $10.4M 0.47% 9,800 SH
48 FREEPORT MCMORAN INC FCX 35671D857 $10.4M 0.47% 149,001 SH
49 ADVANCED MICRO DEVICES INC Call AMD 007903107 $10.0M 0.45% 16,300 SH
50 NVIDIA CORPORATION Call NVDA 67066G104 $9.9M 0.45% 43,300 SH
Filing History
Period Filed AUM Holdings Accession
2026-09-30 2026-10-09 $2.21B 341 0001580642-26-006831
2026-06-30 2026-08-13 $2.10B 337 0001580642-26-005255
2026-03-31 2026-05-13 $1.18B 308 0001580642-26-003162
2025-12-31 2026-02-26 $843.9M 277 0001580642-26-001245
2025-09-30 2025-11-12 $706.1M 244 0001580642-25-007227
Filer Information
Address
PO BOX 222
HOLDERNESS, NH 03245
Phone
(412) 753-1980
Filing Manager
Oak Grove Capital LLC
Holderness, NH
Signatory
Mark G. Visnic
Compliance Officer