CIBR Options Hit 52-Week Bull Extreme as Borrow Tightens

Options traders are the most bullish they've been all year on CIBR. The put/call ratio hit 0.22 on June 23 — the lowest in 52 weeks. The 20-day average sits at 0.31. That's a z-score of -2.76, a statistically extreme skew toward calls.

The timing is notable. It coincides with a sharp tightening in the lending market.

Borrow Market Turns Hostile for Bears

Availability on CIBR has collapsed. One week ago, roughly 129% of shares short were still available to borrow — a comfortable, loose market. That figure has since fallen to 24%. Just one share is available for every four already borrowed.

The compression happened fast. Availability was above 120% as recently as June 10. It has dropped more than 80% in a single week.

Cost to borrow is up 28% over the past month, reaching 2.20%. That remains modest in absolute terms. But the direction — and the pace — tells a clear story. The borrow market for CIBR has flipped from easy to tight in under two weeks.

Short Interest Stays Low Despite the Noise

This data needs context. Short interest is only 0.24% of the float. That is an extremely low absolute level. The week-on-week increase of 20% sounds dramatic. In share terms, it is not — positions moved from roughly 299,000 to 360,000 shares.

The previous note from June 17 flagged a dramatic unwind of a large short position built in late May. That unwind is confirmed. What's happening now is a modest rebuilding at a far lower base. The availability tightening reflects that incremental demand, not a structural short squeeze.

The Divergence Worth Watching

Two signals are now pointing in opposite directions.

Options traders are aggressively positioned for upside. The put/call ratio has never been lower this year. The 52-week low was 0.10 — so there is still room to run, but the current reading already sits well below the historical norm.

Meanwhile, borrow demand is quietly building. Availability at 24% is tight. The 52-week minimum was 9.9% — so the floor is lower. But the speed of the move from 129% to 24% in one week warrants attention.

CIBR trades at $84.21, down about 1% over the past week. The ETF has largely gone sideways over the past month.

Data Summary

• Put/call ratio: 0.22 — 52-week low (20-day mean: 0.31, z-score: -2.76)
• Availability: 24% — down 81% in one week (tight)
• Short interest: 0.24% of float — low, up 20% week-on-week
• Cost to borrow: 2.20%, up 28% over the past month
• Price: $84.21, +0.75% on the day, -1.0% on the week