Harbor Advisory Corp.

In its 13F for Q1 2025 (holdings as of March 31, 2025, filed May 13, 2025), Harbor Advisory Corp. reported 83 stock positions worth $297.9 million. Its top holding was Vanguard S&P 500 ETF (VOO) at 6.0% of the portfolio, followed by Berkshire Hathaway Class B (BRK.B, 4.5%) and Amazon.com (AMZN, 4.4%). Compared with Q4 2024, it opened 1 new position, sold out of 4, added to 20 and reduced 22. The biggest buy was Amazon.com (AMZN, shares +38%) and the biggest sale Invesco S&P 500 Equal Weight (RSP, shares −80%).

Most Recent 13F
Q2 2026
Location
PORTSMOUTH, NH
CIK
0001100710
Portfolio Value
$297.9M (Q1 2025)
SEC Filing
0001765380-25-000220 ↗ filed May 13, 2025

Holdings Value

0$100.0M$200.0M$300.0M$400.0M Q1 2024: $293.8M Q1 2024 Q2 2024: $289.5M Q2 2024 Q3 2024: $306.4M Q3 2024 Q4 2024: $304.4M Q4 2024 Q1 2025: $297.9M $297.9M Q1 2025 Q2 2025: $313.8M Q2 2025 Q3 2025: $338.2M Q3 2025 Q4 2025: $330.6M Q4 2025 Q1 2026: $332.8M Q1 2026 Q2 2026: $373.7M Q2 2026

Holdings 83 stocks · $297.9M

VOO Vanguard S&P 500 ETF 6.05% 35,066 $18.0M Reduce -1.5%
BRK.B Berkshire Hathaway Inc. Class B 4.54% 25,402 $13.5M Reduce -0.7%
AMZN Amazon.com Inc. 4.36% 68,268 $13.0M Add +37.7%
VGK Vanguard Ftse Europe ETF 4.06% 172,323 $12.1M Add +2.1%
AAPL Apple Inc. 3.79% 50,865 $11.3M Reduce -1.1%
IVV iShares Core S&P 500 ETF 3.61% 19,154 $10.8M Add +2.1%
GOOGL Alphabet Inc. Class A 3.60% 69,368 $10.7M Add +0.8%
VWO Vanguard Ftse Emerging Marke 3.58% 235,948 $10.7M Add +3.6%
IJH iShares Core S&P Midcap ETF 3.01% 153,933 $9.0M Add +5.3%
VB Vanguard Most SM-Cap ETF-Usd 2.99% 40,153 $8.9M Add +3.8%
JPM JPMorgan Chase & Co. 2.77% 33,660 $8.3M Reduce -0.5%
VO Vngrd Mrngstr MD-Cap ETF-Usd 2.72% 31,319 $8.1M Add +4.8%
IJR iShares Core S&P Small-Cap E 2.66% 75,683 $7.9M Add +6.4%
FLRN SS SPDR BB Ig Float RT ETF 2.55% 246,860 $7.6M Reduce -3.6%
BIP Brookfield Infrastructure Pa 2.51% 251,391 $7.5M Reduce -0.3%
EEMS iShares MSCI Emerging MKT SM 2.22% 119,069 $6.6M Add +5.5%
MSFT Microsoft Corp. 2.06% 16,313 $6.1M Add +0.5%
JNJ Johnson & Johnson 1.97% 35,346 $5.9M Reduce -2.0%
FTSL First Trust Senior Loan ETF 1.96% 128,074 $5.8M Add +10.2%
SRLN SS Blackstone Sr Loan ETF 1.93% 140,057 $5.8M Reduce -1.8%
TMO Thermo Fisher Scientific Inc. 1.87% 11,201 $5.6M No change
ABBV Abbvie Inc. 1.65% 23,530 $4.9M Reduce -1.9%
IVOO Vanguard S&P Mid-Cap 400 ETF 1.64% 49,537 $4.9M No change
PEP Pepsico Inc. 1.50% 29,792 $4.5M No change
ABT Abbott Laboratories 1.44% 32,343 $4.3M Reduce -2.1%
SCZ iShares MSCI Eafe Small-Cap 1.43% 66,890 $4.2M Add +1.4%
SPDW Ste STR SPDR PT DW Eu ETF 1.41% 115,175 $4.2M Add +7.5%
IBDQ iShares Ibonds Dec 2025 Term 1.37% 162,106 $4.1M No change
IBDT iShares Ibonds Dec 2028 ETF 1.36% 160,860 $4.1M Add +0.5%
VIOO Vanguard S&P Small-Cap 600 E 1.30% 40,128 $3.9M No change
SPEM State Street SP PTF Em ETF 1.19% 89,842 $3.5M No change
SOXX iShares Semiconductor ETF 1.13% 17,843 $3.4M Add +5.2%
V Visa Inc. Class A 1.10% 9,336 $3.3M No change
IJT iShares S&P Small-Cap 600 GR 1.08% 25,784 $3.2M No change
CSCO Cisco Systems Inc. 0.92% 44,255 $2.7M Reduce -0.5%
MRK Merck & Co. Inc. 0.86% 28,536 $2.6M No change
XBI SS SPDR S&P Biotech ETF 0.80% 29,384 $2.4M Reduce -2.4%
DGRO iShares Core Dividend Growth 0.72% 34,660 $2.1M No change
HYBL SS Blackstone High Inc. ETF 0.72% 76,082 $2.1M No change
EFA iShares MSCI Eafe ETF 0.69% 25,146 $2.1M No change
LOW Lowe's Cos Inc. 0.67% 8,523 $2.0M Add +9.1%
CVX Chevron Corp. 0.62% 11,050 $1.8M Add +11.6%
MCD McDonald's Corp. 0.60% 5,706 $1.8M No change
IBDU iShares Ibonds Dec 2029 Term 0.58% 74,320 $1.7M Add +15.0%
PFE Pfizer Inc. 0.57% 66,994 $1.7M Reduce -34.2%
XSD SS SPDR S&P Semiconductor 0.53% 7,889 $1.6M No change
PG The Procter & Gamble Co. 0.51% 8,956 $1.5M No change
EEM iShares MSCI Emerging Market 0.51% 34,564 $1.5M No change
IBB iShares Biotechnology ETF 0.50% 11,761 $1.5M Reduce -0.5%
HD Home Depot Inc. 0.50% 4,082 $1.5M No change
FNDE Schwab Fndmntl Em MRK Eq ETF 0.50% 48,443 $1.5M No change
MDY State Street SPDR S&P Midcap 0.49% 2,743 $1.5M No change
XOM Exxon Mobil Corp. 0.49% 12,194 $1.5M No change
IBDR iShares Ibonds Dec 2026 Term 0.47% 57,391 $1.4M No change
PFF iShares Preferred & Income S 0.43% 41,873 $1.3M Reduce -2.1%
GOOG Alphabet Inc. Class C 0.39% 7,430 $1.2M No change
BIPC Brookfield Infrastructure-A 0.31% 25,471 $921K Add +18.4%
VTI VG Morningstar TS MKT ETF-US 0.31% 3,337 $917K Reduce -0.3%
RSP Invesco S&P 500 Equal Weight 0.30% 5,205 $902K Reduce -80.5%
IBDS Ishrs Ibnds Dec 27 Corp. ETF 0.28% 35,033 $847K No change
VNQ Vanguard Real Estate ETF 0.27% 8,954 $811K Reduce -3.8%
DIS The Walt Disney Co. filed as DISNEY WALT CO 0.26% 7,891 $779K Reduce -10.6%
IBM Intl Business Machines Corp. filed as INTERNATIONAL BUSINESS MACHS 0.25% 3,036 $755K No change
BAC Bank of America Corp. filed as BANK AMERICA CORP 0.24% 16,933 $707K No change
WY Weyerhaeuser Co. 0.21% 21,055 $616K Reduce -14.8%
NVDA Nvidia Corp. 0.17% 4,710 $510K No change
KO The Coca-Cola Co. 0.17% 7,092 $508K No change
VNQI Vanguard GLBL Ex-US Real Est 0.16% 12,055 $488K Reduce -7.5%
SPY SS SPDR S&P 500 ETF Trust-US 0.15% 791 $442K No change
PM Philip Morris International 0.14% 2,645 $420K No change
AVGO Broadcom Inc. 0.13% 2,370 $397K No change
ACWX iShares MSCI Acwi Ex US ETF 0.13% 6,875 $381K No change
IWF iShares Russell 1000 Growth 0.13% 1,050 $379K No change
TDIV FT Nasdaq Tech DVD Index FD 0.12% 5,000 $368K No change
GE General Electric filed as GE AEROSPACE 0.12% 1,728 $346K No change
XSOE Wisdmtree Emerg MKT Ex-St Ow 0.11% 10,745 $332K No change
SCHD Schwab US DVD Equity ETF 0.10% 10,227 $286K No change
SPYM Ste STR SPDR PT S&P 500 ETF 0.09% 3,936 $259K No change
GWW WW Grainger Inc. filed as GRAINGER W W INC 0.08% 255 $252K No change
COST Costco Wholesale Corp. 0.07% 227 $215K Reduce -16.9%
META Meta Platforms Inc. Class A 0.07% 359 $207K No change
IEMG iShares Core MSCI Emerging 0.07% 3,810 $206K New
EMR Emerson Electric Co. 0.07% 1,832 $201K No change

Portfolio Sells Q4 2024 → Q1 2025

RSP Invesco S&P 500 Equal Weight Reduce -80.5% 0.30% −1.23
ENB Enbridge Inc. Sold out 0.00% −0.46
AAPL Apple Inc. Reduce -1.1% 3.79% −0.44
PFE Pfizer Inc. Reduce -34.2% 0.57% −0.32
VOO Vanguard S&P 500 ETF Reduce -1.5% 6.05% −0.25
BIP Brookfield Infrastructure Pa Reduce -0.3% 2.51% −0.12
XBI SS SPDR S&P Biotech ETF Reduce -2.4% 0.80% −0.09
CRM Salesforce Inc. Sold out 0.00% −0.07
NOW ServiceNow Inc. Sold out 0.00% −0.07
ASML ASML Holding NV-NY Reg SHS Sold out 0.00% −0.07
DIS The Walt Disney Co. Reduce -10.6% 0.26% −0.06
FLRN SS SPDR BB Ig Float RT ETF Reduce -3.6% 2.55% −0.03
SRLN SS Blackstone Sr Loan ETF Reduce -1.8% 1.93% −0.02
WY Weyerhaeuser Co. Reduce -14.8% 0.21% −0.02
VTI VG Morningstar TS MKT ETF-US Reduce -0.3% 0.31% −0.01
COST Costco Wholesale Corp. Reduce -16.9% 0.07% −0.01
PFF iShares Preferred & Income S Reduce -2.1% 0.43% −0.01
IBB iShares Biotechnology ETF Reduce -0.5% 0.50% −0.01
VNQI Vanguard GLBL Ex-US Real Est Reduce -7.5% 0.16% −0.01
VNQ Vanguard Real Estate ETF Reduce -3.8% 0.27% −0.00
CSCO Cisco Systems Inc. Reduce -0.5% 0.92% +0.05
JPM JPMorgan Chase & Co. Reduce -0.5% 2.77% +0.11
ABT Abbott Laboratories Reduce -2.1% 1.44% +0.21
JNJ Johnson & Johnson Reduce -2.0% 1.97% +0.25
ABBV Abbvie Inc. Reduce -1.9% 1.65% +0.25
BRK.B Berkshire Hathaway Inc. Class B Reduce -0.7% 4.54% +0.73

Portfolio Buys Q4 2024 → Q1 2025

AMZN Amazon.com Inc. Add +37.7% 4.36% +0.79
VGK Vanguard Ftse Europe ETF Add +2.1% 4.06% +0.54
VWO Vanguard Ftse Emerging Marke Add +3.6% 3.58% +0.29
SPDW Ste STR SPDR PT DW Eu ETF Add +7.5% 1.41% +0.21
FTSL First Trust Senior Loan ETF Add +10.2% 1.96% +0.20
CVX Chevron Corp. Add +11.6% 0.62% +0.15
VO Vngrd Mrngstr MD-Cap ETF-Usd Add +4.8% 2.72% +0.13
SCZ iShares MSCI Eafe Small-Cap Add +1.4% 1.43% +0.11
IBDU iShares Ibonds Dec 2029 Term Add +15.0% 0.58% +0.09
IEMG iShares Core MSCI Emerging New 0.07% +0.07
EEMS iShares MSCI Emerging MKT SM Add +5.5% 2.22% +0.07
IBDT iShares Ibonds Dec 2028 ETF Add +0.5% 1.36% +0.05
LOW Lowe's Cos Inc. Add +9.1% 0.67% +0.03
BIPC Brookfield Infrastructure-A Add +18.4% 0.31% +0.03
IJH iShares Core S&P Midcap ETF Add +5.3% 3.01% +0.02
IVV iShares Core S&P 500 ETF Add +2.1% 3.61% −0.01
IJR iShares Core S&P Small-Cap E Add +6.4% 2.66% −0.03
VB Vanguard Most SM-Cap ETF-Usd Add +3.8% 2.99% −0.06
SOXX iShares Semiconductor ETF Add +5.2% 1.13% −0.07
MSFT Microsoft Corp. Add +0.5% 2.06% −0.19
GOOGL Alphabet Inc. Class A Add +0.8% 3.60% −0.68

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 82$373.7MVOO, IJH, GOOGL, VGK, IJR
Q1 2026 79$332.8MVOO, GOOGL, FTSL, VGK, IJH
Q4 2025 78$330.6MVOO, GOOGL, FTSL, AMZN, VGK
Q3 2025 80$338.2MVOO, GOOGL, AMZN, FTSL, VGK
Q2 2025 81$313.8MVOO, AMZN, FTSL, VGK, GOOGL
Q1 2025 83$297.9MVOO, BRK.B, AMZN, VGK, AAPL
Q4 2024 86$304.4MVOO, GOOGL, AAPL, BRK.B, IVV
Q3 2024 90$306.4MVOO, AAPL, VGK, BRK.B, GOOGL
Q2 2024 84$289.5MVOO, GOOGL, VGK, AAPL, BRK.B
Q1 2024 86$293.8MVOO, VGK, BRK.B, GOOGL, SRLN