MBB β€” iShares MBS ETF

Ownership history in JB Capital LLC  Β·  17 quarters on record

This page tracks every 13F SEC filing in which JB Capital LLC reported a position in iShares MBS ETF (MBB). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price β€” sourced directly from SEC EDGAR 13F filings.

πŸ” Peak position
3.37% (2023 Q1)
πŸ“Š Avg. % of fund
1.7%
πŸ“… First filed
2021 Q4
πŸ“… Last filed
2025 Q4
⏱ Quarters held
17

Position Intelligence

JB Capital LLC Γ— MBB AI Analytics

πŸ“‰ JB Capital LLC underperformed the S&P 500 by –16.4% annually on this MBB position. Timing score: 62% (10/16 decisions correct). Average cost basis: $85.07. Maximum drawdown during holding period: –13.7%.

πŸ“ˆ Position Alpha vs SPY
-16.4%
annualised excess return

❌ Significantly underperformed the S&P 500 by 16.4% ann.
11 quarters analyzed

⏱️ Timing Score
62%

βœ… Decent timing β€” more right than wrong on entries and exits.
10 of 16 add/trim decisions correct

πŸ’° Entry Quality
$85.07
+11.2% vs current ($94.57)

Best entry: $82.01 (2022 Q4)  Β·  Worst: $94.57 (2025 Q4)

πŸ›‘οΈ Drawdown Resilience
–13.7%
max drawdown while held

πŸ’Ž No drawdown exceeding 20% during the holding period β€” exceptionally stable.

πŸ’ͺ Fund Conviction
59%
buy-side decisions

10 adds Β· 7 trims. Bought during 3 of 7 down-price quarters. πŸ“ˆ More buys than sells across the holding period.

πŸ“‘ Position Trajectory
↓ Shrinking
last 4–5 quarters trend

πŸ“‰ Portfolio weight has been declining in recent quarters. Possible distribution phase.
Currently 1.24% of portfolio

⚠ Based on quarterly 13F SEC filings and end-of-quarter closing prices. Timing score = accuracy of add/trim decisions vs next-quarter price direction. Alpha = mean quarterly excess return Γ— 4 (annualised). Not investment advice.

% of Fund (quarterly)    MBB price (monthly, adj. close)
πŸ“‹ Quarterly Holdings History 10 quarters  β–Ύ
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 ADDED 318,485 +10,181 +3.3% 1.24% $30.3M $94.57
2025 Q3 ADDED 308,304 +21,856 +7.6% 1.27% $29.3M $93.16
2025 Q2 ADDED 286,448 +15,511 +5.7% 1.30% $26.9M $90.95
2025 Q1 REDUCED 270,937 -101,025 -27.2% 1.40% $25.4M $89.89
2024 Q4 ADDED 371,962 +36,127 +10.8% 1.91% $34.1M $87.25
2024 Q3 REDUCED 335,835 -5,622 -1.6% 1.85% $32.2M $90.00
2024 Q2 ADDED 341,457 +4,161 +1.2% 1.96% $31.3M $85.39
2024 Q1 ADDED 337,296 +20,710 +6.5% 2.08% $31.2M $85.14
2023 Q4 REDUCED 316,586 -6,120 -1.9% 2.20% $29.8M $86.12
2023 Q3 REDUCED 322,706 -73,337 -18.5% 2.42% $28.7M $80.28
7 older quarters hidden  β€”  Sign in free or upgrade to Premium to see full history
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