Millbank Dartmoor Portsmouth LLC 13F Filing History & Holdings

CIK: 0002098560

Concentrated strategyContrarianQuality / disciplined sizing

Total reported value

$153.7M

Reporting period: 2026-03-31 · Number of holdings: 2

MILLBANK DARTMOOR PORTSMOUTH LLC disclosed 2 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $153.7M and a quarterly turnover rate of 32.9%.

Browse other institutions with $100M to $1B AUM Browse other institutions starting with "M"

Personality snowflake

Concentration: 100
Portfolio Stability: 32.94
Momentum/Contrarian: 0
Sector conviction: 0
Diversification: 4
Sizing Uniformity: 86.69

Sector classification currently covers about 0% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.

Recent moves

Trim SPY
-23.1%　-$54.3M
New buy IBIT

Holdings Map

New buyAddUnchangedTrim

Top 10 holdings by weight

Full holdings list this quarter

#	Ticker	Issuer	Asset Subclass	Weight	Weight Change	Shares Change	4Q Trend
1	SPY	Ss Spdr S&p 500 ETF Trust-us	ETF-Large Cap & Growth	97.05%	-2.95%	-23.12%
2	IBIT	Ishares Bitcoin Trust ETF	ETF-Crypto	2.95%	+2.95%	NEW

Portfolio Performance

Performance for Q3 2026

+3.7%

Performance Last 4 Quarters

+8.9%

Based on 5 months of available history

Stdev: +20.9%
Beta: +1
Alpha: +0.1%
Max Drawdown: -1.5%
Annualized Perf: +22.8%
Batting Avg vs S&P: +60%
Sortino: +2.85
Stutzer: —
Treynor: +0.22
Sterling: —
Calmar: +15.29
Information Ratio: +0.36
Tracking Error: +0.2%
Stdev Down: +7.8%
Winning Months %: +40%
Losing Months %: +60%
Best 12 Months: —
Worst 12 Months: —
Efficiency Ratio: +0.4
Sharpe: +1.07
Stdev Sectors: —
Skewness: +0.42
Kurtosis: -1.14
Upside Potential: +4.82

Reported value over time

Sector allocation

Not enough sector-mapped data yet

Sector allocation over time

Quarterly history

Period	Holdings	Total value	Stability	Top holdings
2026-03-31	2	$153.7M	33	1SPY 2IBIT Top holdings2026-03-31 1.SPY 2.IBIT
2025-12-31	1	$203.5M	0	1SPY Top holdings2025-12-31 1.SPY

Holding changes this quarter

Millbank Dartmoor Portsmouth LLC's most significant position changes for 2026-03-31: New buy: Ishares Bitcoin Trust ETF (IBIT); Trim: Ss Spdr S&p 500 ETF Trust-us (SPY) — shares -23.12%.

Position changes disclosed by Millbank Dartmoor Portsmouth LLC for the quarter ending 2026-03-31, including ticker, issuer, weight change, shares change, and action
#	Ticker	Issuer	Weight Change	Shares Change	Action
1	SPY	Ss Spdr S&p 500 ETF Trust-us	-3%	-23.12%	Trim
2	IBIT	Ishares Bitcoin Trust ETF	—	NEW	New buy

Filing History

Period	Filed	Type	EDGAR
2026-03-31	2026-05-12	13F-HR	View on EDGAR
2025-12-31	2026-02-11	13F-HR	View on EDGAR

FAQ

What is Millbank Dartmoor Portsmouth LLC and what type of investor is it?

Millbank Dartmoor Portsmouth LLC is a investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-03-31), the firm manages a tracked equity portfolio valued at approximately $153.7M, spread across 2 disclosed positions.

What are Millbank Dartmoor Portsmouth LLC's largest equity positions?

Based on the latest 13F filing, Millbank Dartmoor Portsmouth LLC's top holdings by market value are: 1. Ss Spdr S&p 500 ETF Trust-us (SPY) — $149.2M (97.0%) 2. Ishares Bitcoin Trust ETF (IBIT) — $4.5M (3.0%)

What changes did Millbank Dartmoor Portsmouth LLC make in its most recent portfolio filing?

In the latest reported quarter, Millbank Dartmoor Portsmouth LLC made 2 notable position adjustments: 1 new positions were initiated, 0 existing holdings were added to, 1 positions were partially reduced, and 0 were completely exited. The largest of these moves: New buy: Ishares Bitcoin Trust ETF (IBIT); Trim: Ss Spdr S&p 500 ETF Trust-us (SPY) — shares -23.12%

What sectors does Millbank Dartmoor Portsmouth LLC focus on?

Sector breakdown data is not yet available for Millbank Dartmoor Portsmouth LLC. Check back after the next 13F processing cycle.

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View detail

Millbank Dartmoor Portsmouth LLC 13F Filing History & Holdings

CIK: 0002098560

Concentrated strategyContrarianQuality / disciplined sizing

Total reported value

$153.7M

Reporting period: 2026-03-31 · Number of holdings: 2

MILLBANK DARTMOOR PORTSMOUTH LLC disclosed 2 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $153.7M and a quarterly turnover rate of 32.9%.

Browse other institutions with $100M to $1B AUM Browse other institutions starting with "M"

Personality snowflake

Concentration: 100
Portfolio Stability: 32.94
Momentum/Contrarian: 0
Sector conviction: 0
Diversification: 4
Sizing Uniformity: 86.69

Recent moves

Trim SPY
-23.1%　-$54.3M
New buy IBIT

Holdings Map

New buyAddUnchangedTrim

Top 10 holdings by weight

Full holdings list this quarter

#	Ticker	Issuer	Asset Subclass	Weight	Weight Change	Shares Change	4Q Trend
1	SPY	Ss Spdr S&p 500 ETF Trust-us	ETF-Large Cap & Growth	97.05%	-2.95%	-23.12%
2	IBIT	Ishares Bitcoin Trust ETF	ETF-Crypto	2.95%	+2.95%	NEW

Portfolio Performance

Performance for Q3 2026

+3.7%

Performance Last 4 Quarters

+8.9%

Based on 5 months of available history

Stdev: +20.9%
Beta: +1
Alpha: +0.1%
Max Drawdown: -1.5%
Annualized Perf: +22.8%
Batting Avg vs S&P: +60%
Sortino: +2.85
Stutzer: —
Treynor: +0.22
Sterling: —
Calmar: +15.29
Information Ratio: +0.36
Tracking Error: +0.2%
Stdev Down: +7.8%
Winning Months %: +40%
Losing Months %: +60%
Best 12 Months: —
Worst 12 Months: —
Efficiency Ratio: +0.4
Sharpe: +1.07
Stdev Sectors: —
Skewness: +0.42
Kurtosis: -1.14
Upside Potential: +4.82

Reported value over time

Sector allocation

Not enough sector-mapped data yet

Sector allocation over time

Quarterly history

Period	Holdings	Total value	Stability	Top holdings
2026-03-31	2	$153.7M	33	1SPY 2IBIT Top holdings2026-03-31 1.SPY 2.IBIT
2025-12-31	1	$203.5M	0	1SPY Top holdings2025-12-31 1.SPY

Holding changes this quarter

Millbank Dartmoor Portsmouth LLC's most significant position changes for 2026-03-31: New buy: Ishares Bitcoin Trust ETF (IBIT); Trim: Ss Spdr S&p 500 ETF Trust-us (SPY) — shares -23.12%.