Float Utilization¶
OVERVIEW¶
Float utilization measures the percentage of a stock's lendable float currently out on loan to short sellers. It is a supply-side metric that indicates how much of the available borrow inventory has been consumed by short positions.
Note
When utilization reaches 100%, the stock-loan desk has no remaining inventory to lend. New short positions cannot be opened without recalling existing shares or paying elevated fees.
Tapeboard surfaces lender-view float utilization on each /stock/{TICKER}/short-squeeze page, updated daily from prime-broker data sources.
FEATURES¶
| Feature | Detail |
|---|---|
| Metric type | Supply-side borrow inventory indicator |
| Display location | /stock/{TICKER}/short-squeeze |
| Calculation basis | Lender-view (shares on loan ÷ lendable float) |
| Data providers | Equivalent to S3, Ortex, prime-broker dashboards |
| Refresh cadence | Once daily |
| Squeeze Score input | Yes — combined with short interest, days to cover, borrow fee |
Calculation Methods¶
Two formulas appear in practice:
| Formula | Definition | Use Case |
|---|---|---|
| Lender-View Utilization | Shares on Loan ÷ Lendable Float × 100 | Measures borrow inventory consumption — used by Tapeboard |
| Short Percent of Float | Shares Short ÷ Public Float × 100 | Measures size of bearish positioning relative to freely tradable shares |
Tip
These two figures overlap heavily but answer different questions. Utilization tells you whether the borrow desk is running out of shares. Short percent of float tells you how large the aggregate short bet is.
Worked Example¶
A stock has a 50 million-share public float. Of those, 30 million shares are held in lendable accounts. If 27 million shares are currently on loan:
| Metric | Calculation | Result |
|---|---|---|
| Lender-View Utilization | 27M ÷ 30M × 100 | 90% |
| Short Percent of Float | 27M ÷ 50M × 100 | 54% |
At 90% utilization, only 3 million shares remain available. Fee pressure and recall risk begin at this threshold.
Historical Reference Points¶
| Ticker | Event | Utilization | Notes |
|---|---|---|---|
| GME | January 2021 squeeze | ~100% for weeks | Short percent of float exceeded 100% via rehypothecation |
| RAYA | Recent leaderboard | 99–100% | Triple-digit borrow fees recorded |
| TGL | Recent leaderboard | 99–100% | Triple-digit borrow fees recorded |
HOW TO USE¶
Squeeze Hunting¶
- Navigate to
/stock/{TICKER}/short-squeezefor any ticker. - Check the Float Utilization reading against the 90% threshold.
- Cross-reference with Borrow Fee and a near-term catalyst.
- Review the composite Short Squeeze Score — utilization is one of its direct inputs alongside short interest, days to cover, and borrow fee.
Tip
Utilization above 90%, combined with rising borrow fees and a near-term catalyst, is the structural condition that converts a squeeze thesis into an actionable setup.
Screening Workflow¶
| Step | Action | Signal Threshold |
|---|---|---|
| 1 | Filter by Float Utilization | ≥ 90% |
| 2 | Check Borrow Fee | Elevated or rising |
| 3 | Review Days to Cover | Higher = more risk for shorts |
| 4 | Confirm Short Squeeze Score | Composite confirmation |
Use Cases by Audience¶
| Audience | How They Use Float Utilization |
|---|---|
| Squeeze hunters | Primary screening filter for crowded short setups |
| Lending desks | Monitor recall risk; full utilization justifies higher rates or share recall |
| Long holders | Contrarian sentiment signal — extreme utilization on a fundamentally sound name may precede a forced-cover rally |
LIMITATIONS¶
Note
Understanding these limitations prevents misreading the metric under live market conditions.
Float Definition Inconsistencies¶
| Data Provider | Float Methodology |
|---|---|
| FactSet | Excludes all holders above 5% |
| Refinitiv | Applies rolling 90-day adjustments |
| Yahoo Finance | Varies by exclusion criteria |
| Bloomberg | Independent insider exclusion rules |
Provider differences can cause utilization figures to diverge by 5–15 percentage points for the same stock at the same time.
Key Misconceptions¶
| Misconception | Correction |
|---|---|
| Lendable float equals public float | Lendable float is a subset — many institutional holders do not participate in lending programs |
| 100% utilization means no shares can be borrowed | Existing inventory is consumed, but new lender supply can appear as fees rise and draw out dormant holders |
| Utilization reflects intraday activity | Most retail-facing feeds refresh once daily; intraday changes are not captured until the following session |
| High utilization always predicts a squeeze | Utilization is one structural input — a catalyst, volume, and borrow fee trajectory are also required |
Note
A stock can simultaneously show 50% short of public float and 100% utilization. The lendable subset is the binding constraint, not the total public float.