Defense World
13 Oct 2026, 08:01 UTC · 3h ago
Impact · against what's priced in
The reported spike in short interest for MMSD and BPYPN is negligible in absolute terms and does not create a catalyst for significant price movement. Short interest in MMSD remains at a marginal 0.4% of shares, making a short squeeze unlikely.
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What the story claims
2 claims · scored −1 bearish … +1 bullish · 1 new · 1 priced in
Short interest in NYLIM MacKay Muni Short Duration ETF (MMSD) rose 327.2% in September to 13,900 shares.
Newpublished Oct 13 reporting Sept 30 data
So whatDespite the percentage spike, shorts represent only 0.4% of shares, limiting the likelihood of a short squeeze in the coming weeks.
More negative than 70% of claims this week
Royal Bank of Canada increased its holdings in MMSD by 107.8% during the first quarter to 39,661 shares.
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While short interest rose 327.2% to 13,900 shares, the total short position is only 0.4% of shares with a days-to-cover ratio of 0.9, limiting the impact on the fund's price.
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Short interest in BPYPN rose 326.9% in September, though the total volume relative to the float is not provided to gauge materiality.
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Scored by the NIS engine · methodology.
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Priced inreported as first quarter activity
So whatThe position is valued at $1,002,000, making RBC a significant holder relative to the new positions taken by Breakwater ($267k) and Cetera ($416k).
More positive than 45% of claims this week
Which stocks this story touches
More negative than 70% of ticker scores this week
The company saw a sharp increase in shares shorted, with short interest rising 326.9% in September.
More negative than 66% of ticker scores this week
The fund experienced a significant 327.2% growth in short interest during September.
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Defense World
3h ago
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BPYPN hasn't traded since this ran. Last close $13.33 (Oct 12); the reaction starts at the next open.
BPYPN chart →—
MMSD hasn't traded since this ran. Last close $24.83 (Oct 12); the reaction starts at the next open.
MMSD chart →
