Harbor Advisory Corp.

In its 13F for Q4 2024 (holdings as of December 31, 2024, filed January 29, 2025), Harbor Advisory Corp. reported 86 stock positions worth $304.4 million. Its top holding was Vanguard S&P 500 ETF (VOO) at 6.3% of the portfolio, followed by Alphabet Class A (GOOGL, 4.3%) and Apple (AAPL, 4.2%). Compared with Q3 2024, it opened 3 new positions, sold out of 7, added to 17 and reduced 35. The biggest buy was First Trust Senior Loan ETF (FTSL, shares +1744%) and the biggest sale SS Blackstone Sr Loan ETF (SRLN, shares −43%).

Most Recent 13F
Q2 2026
Location
PORTSMOUTH, NH
CIK
0001100710
Portfolio Value
$304.4M (Q4 2024)
SEC Filing
0001100710-25-000001 ↗ filed Jan 29, 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 $304.4M Q4 2024 Q1 2025: $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 86 stocks · $304.4M

VOO Vanguard S&P 500 ETF 6.30% 35,595 $19.2M Reduce -0.0%
GOOGL Alphabet Inc. Class A 4.28% 68,796 $13.0M Reduce -0.8%
AAPL Apple Inc. 4.23% 51,420 $12.9M Reduce -1.5%
BRK.B Berkshire Hathaway Inc. Class B 3.81% 25,592 $11.6M Reduce -1.2%
IVV iShares Core S&P 500 ETF 3.63% 18,759 $11.0M Add +7.5%
AMZN Amazon.com Inc. 3.57% 49,588 $10.9M Reduce -1.0%
VGK Vanguard Ftse Europe ETF 3.52% 168,760 $10.7M Reduce -0.8%
VWO Vanguard Ftse Emerging Marke 3.29% 227,776 $10.0M Add +1.2%
VB Vanguard Most SM-Cap ETF-Usd 3.05% 38,681 $9.3M Add +14.4%
IJH iShares Core S&P Midcap ETF 2.99% 146,162 $9.1M Add +1.5%
IJR iShares Core S&P Small-Cap E 2.69% 71,106 $8.2M Add +2.2%
JPM JPMorgan Chase & Co. 2.66% 33,828 $8.1M Reduce -2.7%
BIP Brookfield Infrastructure Pa 2.63% 252,020 $8.0M Add +1.5%
VO Vngrd Mrngstr MD-Cap ETF-Usd 2.59% 29,896 $7.9M Add +16.6%
FLRN SS SPDR BB Ig Float RT ETF 2.59% 256,160 $7.9M Reduce -1.9%
MSFT Microsoft Corp. 2.25% 16,240 $6.8M Add +3.5%
EEMS iShares MSCI Emerging MKT SM 2.16% 112,900 $6.6M Reduce -0.2%
SRLN SS Blackstone Sr Loan ETF 1.96% 142,660 $6.0M Reduce -43.2%
TMO Thermo Fisher Scientific Inc. 1.91% 11,201 $5.8M Add +8.1%
FTSL First Trust Senior Loan ETF 1.76% 116,185 $5.4M Add +1744.2%
IVOO Vanguard S&P Mid-Cap 400 ETF 1.72% 49,537 $5.2M No change
JNJ Johnson & Johnson 1.71% 36,076 $5.2M Reduce -0.2%
RSP Invesco S&P 500 Equal Weight 1.53% 26,661 $4.7M New
PEP Pepsico Inc. 1.49% 29,792 $4.5M Reduce -0.5%
ABBV Abbvie Inc. 1.40% 23,995 $4.3M Reduce -0.6%
VIOO Vanguard S&P Small-Cap 600 E 1.40% 40,128 $4.3M No change
IBDQ iShares Ibonds Dec 2025 Term 1.33% 162,106 $4.1M Reduce -0.4%
SCZ iShares MSCI Eafe Small-Cap 1.32% 65,942 $4.0M Reduce -7.8%
IBDT iShares Ibonds Dec 2028 ETF 1.31% 160,080 $4.0M Add +1.0%
ABT Abbott Laboratories 1.23% 33,033 $3.7M Reduce -5.2%
SPDW Ste STR SPDR PT DW Eu ETF 1.20% 107,182 $3.7M Add +34.2%
SOXX iShares Semiconductor ETF 1.20% 16,958 $3.7M Reduce -0.9%
IJT iShares S&P Small-Cap 600 GR 1.15% 25,784 $3.5M No change
SPEM State Street SP PTF Em ETF 1.13% 89,842 $3.4M Add +27.9%
V Visa Inc. Class A 0.97% 9,336 $3.0M No change
MRK Merck & Co. Inc. 0.93% 28,536 $2.8M No change
XBI SS SPDR S&P Biotech ETF 0.89% 30,105 $2.7M Reduce -4.5%
PFE Pfizer Inc. 0.89% 101,855 $2.7M Reduce -19.3%
CSCO Cisco Systems Inc. 0.86% 44,455 $2.6M Reduce -0.4%
HYBL SS Blackstone High Inc. ETF 0.71% 76,082 $2.2M Reduce -8.2%
DGRO iShares Core Dividend Growth 0.70% 34,660 $2.1M No change
XSD SS SPDR S&P Semiconductor 0.64% 7,889 $2.0M No change
LOW Lowe's Cos Inc. 0.63% 7,815 $1.9M No change
EFA iShares MSCI Eafe ETF 0.62% 25,146 $1.9M No change
MCD McDonald's Corp. 0.54% 5,706 $1.7M No change
HD Home Depot Inc. 0.52% 4,082 $1.6M No change
MDY State Street SPDR S&P Midcap 0.51% 2,743 $1.6M No change
IBB iShares Biotechnology ETF 0.51% 11,816 $1.6M Reduce -4.7%
PG The Procter & Gamble Co. 0.49% 8,956 $1.5M No change
IBDU iShares Ibonds Dec 2029 Term 0.48% 64,649 $1.5M Add +630.5%
EEM iShares MSCI Emerging Market 0.47% 34,564 $1.4M Reduce -4.8%
CVX Chevron Corp. 0.47% 9,902 $1.4M Reduce -54.1%
GOOG Alphabet Inc. Class C 0.46% 7,430 $1.4M Reduce -0.3%
ENB Enbridge Inc. 0.46% 33,215 $1.4M Reduce -9.3%
FNDE Schwab Fndmntl Em MRK Eq ETF 0.46% 48,443 $1.4M No change
IBDR iShares Ibonds Dec 2026 Term 0.45% 57,391 $1.4M Add +7.5%
PFF iShares Preferred & Income S 0.44% 42,791 $1.3M Reduce -9.5%
XOM Exxon Mobil Corp. 0.43% 12,194 $1.3M Reduce -0.9%
DIS The Walt Disney Co. filed as DISNEY WALT CO 0.32% 8,823 $982K Reduce -9.7%
VTI VG Morningstar TS MKT ETF-US 0.32% 3,347 $970K Reduce -12.1%
BIPC Brookfield Infrastructure-A 0.28% 21,506 $860K Reduce -28.1%
IBDS Ishrs Ibnds Dec 27 Corp. ETF 0.28% 35,033 $839K Add +18.6%
VNQ Vanguard Real Estate ETF 0.27% 9,309 $829K Reduce -10.0%
BAC Bank of America Corp. filed as BANK AMERICA CORP 0.24% 16,933 $744K Reduce -7.8%
WY Weyerhaeuser Co. 0.23% 24,715 $696K Reduce -15.7%
IBM Intl Business Machines Corp. filed as INTERNATIONAL BUSINESS MACHS 0.22% 3,036 $667K No change
NVDA Nvidia Corp. 0.21% 4,710 $633K No change
AVGO Broadcom Inc. 0.18% 2,370 $549K No change
VNQI Vanguard GLBL Ex-US Real Est 0.17% 13,025 $515K Reduce -18.4%
SPY SS SPDR S&P 500 ETF Trust-US 0.15% 791 $464K No change
KO The Coca-Cola Co. 0.14% 7,092 $442K No change
IWF iShares Russell 1000 Growth 0.14% 1,050 $422K No change
TDIV FT Nasdaq Tech DVD Index FD 0.13% 5,000 $392K No change
ACWX iShares MSCI Acwi Ex US ETF 0.12% 6,875 $359K Add +1.5%
XSOE Wisdmtree Emerg MKT Ex-St Ow 0.11% 10,745 $328K No change
PM Philip Morris International 0.10% 2,645 $318K No change
GE General Electric filed as GE AEROSPACE 0.09% 1,728 $288K No change
SCHD Schwab US DVD Equity ETF 0.09% 10,227 $279K No change
SPYM Ste STR SPDR PT S&P 500 ETF 0.09% 3,936 $271K No change
GWW WW Grainger Inc. filed as GRAINGER W W INC 0.09% 255 $269K No change
COST Costco Wholesale Corp. 0.08% 273 $250K No change
EMR Emerson Electric Co. 0.07% 1,832 $227K No change
CRM Salesforce Inc. 0.07% 671 $224K New
NOW ServiceNow Inc. 0.07% 199 $211K New
META Meta Platforms Inc. Class A 0.07% 359 $210K No change
ASML ASML Holding NV-NY Reg SHS 0.07% 295 $204K No change

Portfolio Sells Q3 2024 → Q4 2024

SRLN SS Blackstone Sr Loan ETF Reduce -43.2% 1.96% −1.47
IBDP iShares Ibonds Dec 2024 Term Sold out 0.00% −1.26
CVX Chevron Corp. Reduce -54.1% 0.47% −0.57
VGK Vanguard Ftse Europe ETF Reduce -0.8% 3.52% −0.43
PFE Pfizer Inc. Reduce -19.3% 0.89% −0.31
SCZ iShares MSCI Eafe Small-Cap Reduce -7.8% 1.32% −0.26
EEMS iShares MSCI Emerging MKT SM Reduce -0.2% 2.16% −0.20
JNJ Johnson & Johnson Reduce -0.2% 1.71% −0.20
PEP Pepsico Inc. Reduce -0.5% 1.49% −0.17
ABBV Abbvie Inc. Reduce -0.6% 1.40% −0.16
BIPC Brookfield Infrastructure-A Reduce -28.1% 0.28% −0.14
XBI SS SPDR S&P Biotech ETF Reduce -4.5% 0.89% −0.13
BKLN Invesco Senior Loan ETF Sold out 0.00% −0.11
WY Weyerhaeuser Co. Reduce -15.7% 0.23% −0.10
SOXX iShares Semiconductor ETF Reduce -0.9% 1.20% −0.09
BRK.B Berkshire Hathaway Inc. Class B Reduce -1.2% 3.81% −0.08
IBB iShares Biotechnology ETF Reduce -4.7% 0.51% −0.08
AMAT Applied Materials Inc. Sold out 0.00% −0.08
VNQI Vanguard GLBL Ex-US Real Est Reduce -18.4% 0.17% −0.08
IEMG iShares Core MSCI Emerging Sold out 0.00% −0.07
UNH Unitedhealth Group Inc. Sold out 0.00% −0.07
PFF iShares Preferred & Income S Reduce -9.5% 0.44% −0.07
ABT Abbott Laboratories Reduce -5.2% 1.23% −0.07
ZTS Zoetis Inc. Sold out 0.00% −0.07
MDLZ Mondelez International Inc. Class A Sold out 0.00% −0.07
EEM iShares MSCI Emerging Market Reduce -4.8% 0.47% −0.07
HYBL SS Blackstone High Inc. ETF Reduce -8.2% 0.71% −0.07
VNQ Vanguard Real Estate ETF Reduce -10.0% 0.27% −0.06
FLRN SS SPDR BB Ig Float RT ETF Reduce -1.9% 2.59% −0.04
XOM Exxon Mobil Corp. Reduce -0.9% 0.43% −0.04
VTI VG Morningstar TS MKT ETF-US Reduce -12.1% 0.32% −0.03
ENB Enbridge Inc. Reduce -9.3% 0.46% −0.02
IBDQ iShares Ibonds Dec 2025 Term Reduce -0.4% 1.33% +0.00
BAC Bank of America Corp. Reduce -7.8% 0.24% +0.01
DIS The Walt Disney Co. Reduce -9.7% 0.32% +0.02
GOOG Alphabet Inc. Class C Reduce -0.3% 0.46% +0.06
CSCO Cisco Systems Inc. Reduce -0.4% 0.86% +0.09
VOO Vanguard S&P 500 ETF Reduce -0.0% 6.30% +0.17
AAPL Apple Inc. Reduce -1.5% 4.23% +0.26
JPM JPMorgan Chase & Co. Reduce -2.7% 2.66% +0.27
GOOGL Alphabet Inc. Class A Reduce -0.8% 4.28% +0.53
AMZN Amazon.com Inc. Reduce -1.0% 3.57% +0.53

Portfolio Buys Q3 2024 → Q4 2024

FTSL First Trust Senior Loan ETF Add +1744.2% 1.76% +1.67
RSP Invesco S&P 500 Equal Weight New 1.53% +1.53
VB Vanguard Most SM-Cap ETF-Usd Add +14.4% 3.05% +0.44
IBDU iShares Ibonds Dec 2029 Term Add +630.5% 0.48% +0.42
VO Vngrd Mrngstr MD-Cap ETF-Usd Add +16.6% 2.59% +0.39
IVV iShares Core S&P 500 ETF Add +7.5% 3.63% +0.34
SPDW Ste STR SPDR PT DW Eu ETF Add +34.2% 1.20% +0.22
SPEM State Street SP PTF Em ETF Add +27.9% 1.13% +0.19
CRM Salesforce Inc. New 0.07% +0.07
NOW ServiceNow Inc. New 0.07% +0.07
IJH iShares Core S&P Midcap ETF Add +1.5% 2.99% +0.06
MSFT Microsoft Corp. Add +3.5% 2.25% +0.04
IBDS Ishrs Ibnds Dec 27 Corp. ETF Add +18.6% 0.28% +0.04
IJR iShares Core S&P Small-Cap E Add +2.2% 2.69% +0.04
IBDR iShares Ibonds Dec 2026 Term Add +7.5% 0.45% +0.03
ACWX iShares MSCI Acwi Ex US ETF Add +1.5% 0.12% −0.01
IBDT iShares Ibonds Dec 2028 ETF Add +1.0% 1.31% −0.01
TMO Thermo Fisher Scientific Inc. Add +8.1% 1.91% −0.18
BIP Brookfield Infrastructure Pa Add +1.5% 2.63% −0.21
VWO Vanguard Ftse Emerging Marke Add +1.2% 3.29% −0.22

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