FundWatcher

Compare fund portfolios

See how two funds' portfolios overlap. Enter two tickers:

vs

MFBCX vs MFIOX

Shared holdings
71
MFBCX covered by MFIOX
11.20%
MFIOX covered by MFBCX
11.20%

Coverage = share of one portfolio's weight reproduced by the other (overlapping positions, min weight). Top 50 positions per side shown; ● = held by both — hover a shared position to highlight it in both columns.

MFBCX (April 30, 2026)

SecurityWeight
MFS Institutional Money Market Portfolio, Class A1.77%●
UBS GROUP0.78%
JPMORGAN CHASE0.76%
BOEING CO0.75%●
CHARLES SCHWAB0.62%●
BERMUDA GOVERNMENT OF 5% 07/15/2032 144A0.59%
MORGAN STANLEY0.58%
SUMITOMO MITSUI0.58%
UBS GROUP0.54%
CAIXABANK SA REGD V/R 144A P/P 6.840000000.54%
AMERICAN HOMES 40.51%
AIB V6.608 09/13/29 144A0.51%
SPIRE INC0.50%
NXP BV/NXP FDG0.50%
MARS INC0.46%
BACARDI LTD / MARTINI BV SR UNSECURED 144A 06/33 5.40.46%
Element Fleet Management Corp.0.46%
Bank Hapoalim BM0.45%
JPMORGAN CHASE0.45%●
NATL AUSTRALIABK0.45%
Jane Street Group / JSG Finance Inc.0.45%
CG 5.05 09/19/350.44%
MXPRLL 7.75 07/15/30 144A0.44%
Boston Gas Co0.44%
SCIH SALT HOLDINGS INC SR SECURED 144A 05/28 4.8750.43%
PIONEER NATURAL0.43%
Flutter Treasury DAC0.42%
HIGHWOODS REALTY0.42%●
AMAZON.COM INC0.42%
STORE CAPITAL LLC SR UNSECURED 12/31 2.70.42%●
ICON Investments Six DAC0.41%
JPMORGAN CHASE0.41%
NSTAU 6.125 04/11/33 144A0.41%●
SMBC AVIATION CAPITAL FI REGD 144A P/P 5.300000000.41%
MUFG V5.188 09/12/360.41%
PRMWCN 4.375 04/30/29 144a0.41%
Citadel Securities Global Holdings LLC0.40%●
TARGA RESOURCES0.40%●
US TREASURY N/B0.40%
TransDigm, Inc.0.40%
CHENIERE ENERGYP0.40%
EASTERN ENERGY0.39%
US TREASURY N/B0.39%
AMERICAN INTERNA0.39%
DANSKE BANK A/S0.38%
FERGUSON ENTERPR0.38%
SUNOCO LP SR UNSECURED 144A 08/32 6.6250.38%
NORDEA BANK ABP0.38%
JERSEY CENTRAL PWR + LT SR UNSECURED 144A 03/32 2.750.38%●
ARDN Mortgage Trust, Series 2025-ARCP, Class A0.38%

MFIOX (April 30, 2026)

SecurityWeight
US TREASURY N/B2.94%
US TREASURY N/B2.38%
US TREASURY N/B2.20%
US TREASURY N/B1.98%
US TREASURY N/B1.87%●
MFS Institutional Money Market Portfolio, Class A1.84%●
US TREASURY N/B1.82%
US TREASURY N/B1.75%
US TREASURY N/B1.74%
US TREASURY N/B1.72%
US TREASURY N/B1.62%
US TREASURY N/B1.58%
US TREASURY N/B1.18%
US TREASURY N/B0.83%
JEFFERIES GROUP0.62%●
US TREASURY N/B0.56%
New Residential Mortgage Loan Trust, Series 2026-NQM3, Class A10.48%
PMT Loan Trust, Series 2026-INV2, Class A350.48%
MF1 2025-FL19 LLC MF1 2025-FL19 AS0.48%
Enel SPA 7.50 10/14/20320.47%
Venture Global LNG Inc0.47%
STORE Master Funding LLC, Series 2025-1A, Class A20.46%
SANTOS FINANCE LTD REGD 144A P/P 6.875000000.46%●
US TREASURY N/B0.45%
AUTONATION INC0.45%
PFP Ltd., Series 2024-11, Class AS0.43%
MF1 2025-FL19 LLC SER 2025-FL19 CL B V/R REGD 144A P/P 6.075860000.43%
SAMMONS FINL. GRP. 6.875%0.42%●
C V6.875 PERP GG0.42%
Bain Capital Credit CLO 2021-4 Ltd0.42%
US TREASURY N/B0.40%
VORNADO REALTY LP SR UNSECURED 02/33 5.750.40%●
TRANSDIGM INC SUB 4.625% 01-15-290.39%
Northwoods Capital XIV-B Ltd., Series 2018-14BA, Class BR0.39%
BOOZ ALLEN HAMILTON INC REGD 5.950000000.39%●
MF1 LLC, Series 2025-FL20, Class C0.38%
SKX 10 07/15/33 144a0.38%
Provident Funding Mortgage Trust, Series 2025-5, Class A40.38%
Black Diamond CLO Ltd., Series 2019-2A, Class BR0.38%
Parallel Ltd., Series 2023-1A, Class A2R0.38%
NH NFAUTL 6.89 04/01/20340.37%●
COMM Mortgage Trust, Series 2024-CBM, Class B0.37%
Jane Street Group / JSG Finance Inc.0.37%
FR 5.25 01/15/310.36%
Venture 43 CLO Ltd0.35%
CHARLES SCHWAB0.35%●
MASSACHUSETTS ST DEV FIN AGY REVENUE0.35%●
NOMURA HOLDINGS0.35%
MSRM 2026-NQM2 A10.35%
NOMURA HOLDINGS INC JR SUBORDINA 12/99 VAR0.35%

Machine-readable: JSON · Markdown. Programmatic access via the agent surface.