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Nautilus Advisors LLC — 13F Holdings & Portfolio

CIK 2083253 · latest 13F-HR filed 2026-10-07

Backtest portfolio

Nautilus Advisors LLC manages $165.3M in 13F-reported U.S. long-equity assets across 172 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are AMZN (4.96%), AAPL (4.88%), SPY (4.29%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 7 new positions and exited 14; 46 existing positions rose in reported value and 59 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
$165.3M

Long-equity book

Holdings
172

Distinct positions

Period
2026-09-30

Filed 2026-10-07

Q/Q Activity
+7 / −14 / ↑46 / ↓59

vs 2026-06-30

Portfolio charts

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

Portfolio map

Q3 26
AMZN5.0% · -4%AAPL4.9% · -9%SPY4.3% · -0%GOOGL3.9% · -6%DFAC2.6% · +2%NFLX2.2% · +2%COST2.2% · +10%MSFT1.9% · +2%GOOG1.8% · -1%GSEW1.7% · -0%TDVG1.7% · -1%NVDA1.7% · -2%DFIV1.6% · +1%JPLD1.5% · -12%AMAT1.4% · -6%V1.4% · +0%FEGE1.2% · -2%CGDG1.2% · -3%ABBV1.2% · +0%CGGR1.1% · +0%JEPQ1.1% · +12%DISV1.0% · +3%VUG1.0% · -0%BUSA0.9% · +13%BRK.B0.9% · -3%QCOM0.9% · -2%AMD0.9% · -20%SPCX0.8% · +153%CRM0.8% · -1%FEOE0.8% · -2%QQQ0.8% · +5%TEX0.8% · 0%GPIX0.8% · +4%SCHW0.7% · +0%BSMC0.7% · +1%JEMA0.7% · -6%META0.7% · +1%ICE0.7% · 0%JNJ0.7% · +1%ASML0.7% · -2%CGBL0.7% · -6%GILD0.6% · 0%TXUE0.6% · -3%XLK0.6% · -8%DFAT0.6% · -1%DFCA0.6% · -16%USRT0.6% · +7%GLW0.6% · +4%FLOT0.6% · +6%ADP0.5% · 0%AMGN0.5% · +2%CINF0.5% · 0%CMG0.5% · -0%LVHI0.5% · +5%VIG0.5% · +0%EMR0.5% · +2%SBUX0.5% · -2%SCHA0.5% · 0%SCHM0.5% · -1%VWO0.5% · 0%

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

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 = 30.5%

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

Firm Profile & Key People

As of the firm’s regulatory filing dated Feb 25, 2026.

Assets Under Management
$304.3M
Discretionary
$277.1M
Employees
3
Accounts
607
Address
888 PROSPECT ST.
SUITE 200
LA JOLLA, CA 92037
Phone
(619) 573-4590
Website
Name Title / Status Ownership Type
BEHNER, MICHAEL, SHEA ControlCHIEF COMPLIANCE OFFICER & PRINCIPAL
since Sep 2010
75% or moreIndividual
Ownership & leadership changes · 3 filings with changes since Jan 31, 2012

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.

Nov 26, 2019 filing
  • No longer listedBEHNER, MICHAEL, SHEA · OWNER · 75% or more · indirect via MSB INDUSTRIES, INC. · control person · listed since Sep 2011
  • No longer listedBRENNER ENTERPRISES · MEMBER · 25–50% · control person · listed since Jan 2011
  • No longer listedBRENNER, THOMAS, SCOTT · OWNER · 75% or more · indirect via BRENNER ENTERPRISES · control person · listed since Dec 2010
  • No longer listedBRENNER, THOMAS, SCOTT · PRINCIPAL · Less than 5% · control person · listed since Jan 2012
  • No longer listedBWK INC. · MEMBER · 25–50% · control person · listed since Jan 2011
  • No longer listedKLINE, BRIGAND, WADE · OWNER · 75% or more · indirect via BWK INC. · control person · listed since May 2010
  • No longer listedMSB INDUSTRIES INC · MEMBER · 25–50% · control person · listed since Sep 2011
  • ChangedBEHNER, MICHAEL, SHEA · ownership Less than 5% → 75% or more
Mar 20, 2019 filing
  • ChangedBEHNER, MICHAEL, SHEA · title PRINCIPAL → CHIEF COMPLIANCE OFFICER & PRINCIPAL
  • ChangedBRENNER, THOMAS, SCOTT · title CHIEF COMPLIANCE OFFICER & PRINCIPAL → PRINCIPAL
Apr 12, 2018 filing
  • AddedBEHNER, MICHAEL, SHEA · PRINCIPAL · Less than 5% · control person
  • ChangedBRENNER, THOMAS, SCOTT · title CHIEF COMPLIANCE OFFICER → CHIEF COMPLIANCE OFFICER & PRINCIPAL
Jan 31, 2012 filing (earliest on record)
  • ListedBEHNER, MICHAEL, SHEA · OWNER · 75% or more · indirect via MSB INDUSTRIES, INC. · control person
  • ListedBRENNER ENTERPRISES · MEMBER · 25–50% · control person
  • ListedBRENNER, THOMAS, SCOTT · OWNER · 75% or more · indirect via BRENNER ENTERPRISES · control person
  • ListedBRENNER, THOMAS, SCOTT · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
  • ListedBWK INC. · MEMBER · 25–50% · control person
  • ListedKLINE, BRIGAND, WADE · OWNER · 75% or more · indirect via BWK INC. · control person
  • ListedMSB INDUSTRIES INC · MEMBER · 25–50% · 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.

Top Adds (vs prior quarter)

Show all 46 →

Top Trims

Show all 59 →

New Positions

Show all 7 →

Exited Positions

Show all 14 →

Nautilus Advisors 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 AMAZON COM INC AMZN 023135106 $8.2M 4.96% 32,933 SH
2 APPLE INC AAPL 037833100 $8.1M 4.88% 24,239 SH
3 STATE STR SPDR S&P 500 ETF T SPY 78462F103 $7.1M 4.29% 9,293 SH
4 ALPHABET INC GOOGL 02079K305 $6.4M 3.90% 18,740 SH
5 DIMENSIONAL ETF TRUST DFAC 25434V708 $4.3M 2.60% 96,740 SH
6 NETFLIX INC. NFLX 64110L106 $3.7M 2.22% 52,749 SH
7 COSTCO WHOLESALE CORPORATION COST 22160K105 $3.6M 2.20% 4,001 SH
8 MICROSOFT CORP MSFT 594918104 $3.2M 1.93% 6,205 SH
9 ALPHABET INC GOOG 02079K107 $3.1M 1.85% 8,955 SH
10 GOLDMAN SACHS ETF TR GSEW 381430438 $2.8M 1.70% 30,110 SH
11 T ROWE PRICE EXCHANGE-TRADED TDVG 87283Q404 $2.8M 1.68% 57,656 SH
12 NVIDIA CORPORATION NVDA 67066G104 $2.7M 1.66% 12,003 SH
13 DIMENSIONAL ETF TRUST DFIV 25434V807 $2.6M 1.60% 47,431 SH
14 J P MORGAN EXCHANGE TRADED F JPLD 46654Q773 $2.5M 1.54% 49,366 SH
15 APPLIED MATLS INC AMAT 038222105 $2.4M 1.43% 4,635 SH
16 VISA INC V 92826C839 $2.3M 1.40% 6,418 SH
17 RBB FUND TRUST FEGE 75526L886 $2.0M 1.23% 40,347 SH
18 CAPITAL GROUP DIVIDEND GROWE CGDG 14021L109 $2.0M 1.21% 54,230 SH
19 ABBVIE INC ABBV 00287Y109 $2.0M 1.19% 7,519 SH
20 CAPITAL GROUP GROWTH ETF CGGR 14020G101 $1.9M 1.15% 39,912 SH
21 J P MORGAN EXCHANGE TRADED F JEPQ 46654Q203 $1.8M 1.07% 28,766 SH
22 DIMENSIONAL ETF TRUST DISV 25434V781 $1.7M 1.00% 38,171 SH
23 VANGUARD INDEX FDS VUG 922908736 $1.6M 0.96% 17,658 SH
24 2023 ETF SERIES TRUST BUSA 900934308 $1.5M 0.90% 38,070 SH
25 BERKSHIRE HATHAWAY INC DEL BRK.B 084670702 $1.5M 0.88% 2,930 SH
26 QUALCOMM INC QCOM 747525103 $1.4M 0.86% 7,729 SH
27 ADVANCED MICRO DEVICES INC AMD 007903107 $1.4M 0.86% 2,312 SH
28 SPACE EXPLORATION TECHN CORP SPCX 84615Q103 $1.4M 0.85% 9,297 SH
29 SALESFORCE INC CRM 79466L302 $1.4M 0.84% 6,029 SH
30 RBB FUND TRUST FEOE 75526L878 $1.4M 0.83% 25,618 SH
31 INVESCO QQQ TR QQQ 46090E103 $1.3M 0.81% 1,812 SH
32 TEREX CORP NEW TEX 880779103 $1.3M 0.78% 24,522 SH
33 GOLDMAN SACHS ETF TR GPIX 38149W622 $1.2M 0.75% 22,353 SH
34 CHARLES SCHWAB CORP (THE) SCHW 808513105 $1.2M 0.73% 12,401 SH
35 2023 ETF SERIES TRUST BSMC 900934100 $1.2M 0.73% 32,100 SH
36 J P MORGAN EXCHANGE TRADED F JEMA 46641Q266 $1.2M 0.72% 19,214 SH
37 META PLATFORMS INC META 30303M102 $1.2M 0.71% 1,630 SH
38 INTERCONTINENTAL EXCHANGE IN ICE 45866F104 $1.2M 0.71% 7,750 SH
39 JOHNSON & JOHNSON JNJ 478160104 $1.1M 0.69% 4,297 SH
40 ASML HLDG NV ASML N07059210 $1.1M 0.67% 612 SH
41 CAPITAL GROUP CORE BALANCED CGBL 14021D107 $1.1M 0.65% 29,274 SH
42 GILEAD SCIENCES INC GILD 375558103 $1.0M 0.63% 7,023 SH
43 THORNBURG ETF TR TXUE 88521L306 $1.0M 0.63% 30,105 SH
44 SELECT SECTOR SPDR TR XLK 81369Y803 $982.9K 0.59% 5,021 SH
45 DIMENSIONAL ETF TRUST DFAT 25434V609 $982.3K 0.59% 14,785 SH
46 DIMENSIONAL ETF TRUST DFCA 25434V633 $972.4K 0.59% 20,399 SH
47 ISHARES TR USRT 464288521 $936.1K 0.57% 15,201 SH
48 CORNING INC GLW 219350105 $933.3K 0.56% 6,070 SH
49 ISHARES TR FLOT 46429B655 $911.3K 0.55% 17,852 SH
50 AUTOMATIC DATA PROCESSING IN ADP 053015103 $884.1K 0.53% 3,426 SH
Filing History
Period Filed AUM Holdings Accession
2026-09-30 2026-10-07 $165.3M 172 0002083253-26-000002
2026-06-30 2026-07-14 $169.6M 179 0001214659-26-008504
2026-03-31 2026-04-17 $145.8M 162 0001214659-26-004760
2025-12-31 2026-01-22 $153.2M 173 0001214659-26-000734
Filer Information
Address
888 PROSPECT ST SUITE 200
LA JOLLA, CA 92037
Phone
(619) 573-4590
Filing Manager
Nautilus Advisors LLC
LA JOLLA, CA
Signatory
Michael Behner
Principal/CCO