Inst. Holders
50 funds
XB
XBI
State Street SPDR S&P Biotech ETF
$154.04 ▼ -0.30%
Prev close $154.5140 New Institutional Positions10 Institutional Exits
Snapshot
The big-picture read on XBI right now — valuation, ownership and activity at a glance.
Inst. Value
$21.7B
Inst. Activity
40 buys / 10 sells
Price chart 30d -6.9%
Daily candles (open–high–low–close) with volume. Green = up day, red = down day.
No data for this timeframe.
Vol
Recent activity
The latest filings, insider trades, analyst actions, press and options flow — newest first.
Oct 1, 2026 short_volume
Short Volume: XBI — 65.6% short (2.7M / 4.1M)
Short: 2,687,687 | Exempt: 651 | TRF Vol: 4,099,665 | Short Ratio: 65.6% | Off-exchange volume (dark
Jun 30, 2026 Inst.
BANK OF AMERICA CORP — TRIM
10,566,963 shares ($1.7B)
Jun 30, 2026 Inst.
WELLS FARGO & COMPANY/MN — ADD
3,504,082 shares ($554.5M)
Upcoming & catalyst events
Scheduled dates plus disclosed catalysts — earnings, dividends, enforcement, FDA and clinical-trial events. Colored dot = impact.
Oct 1, 2026
short_volume
Short Volume: XBI — 65.6% short (2.7M / 4.1M)
Short: 2,687,687 | Exempt: 651 | TRF Vol: 4,099,665 | Short Ratio: 65.6% | Off-exchange volume (dark pool + OTC)
Sep 28, 2026
short_volume
Short Volume: XBI — 66.9% short (1.6M / 2.4M)
Short: 1,599,392 | Exempt: 52 | TRF Vol: 2,390,403 | Short Ratio: 66.9% | Off-exchange volume (dark pool + OTC)
Sep 23, 2026
short_volume
Short Volume: XBI — 60.9% short (2.2M / 3.6M)
Short: 2,163,550 | Exempt: 1,111 | TRF Vol: 3,553,037 | Short Ratio: 60.9% | Off-exchange volume (dark pool + OTC)
Sep 22, 2026
short_volume
Short Volume: XBI — 77.9% short (1.7M / 2.2M)
Short: 1,705,205 | Exempt: 3 | TRF Vol: 2,187,706 | Short Ratio: 77.9% | Off-exchange volume (dark pool + OTC)
Sep 21, 2026
short_volume
Short Volume: XBI — 66.4% short (1.4M / 2.2M)
Short: 1,440,819 | Exempt: 3,491 | TRF Vol: 2,169,125 | Short Ratio: 66.4% | Off-exchange volume (dark pool + OTC)
Institutional ownership
Which big funds own XBI (from quarterly 13F filings) and who is adding or trimming.
50 institutional holders with $21.7B total value (135,012,510 shares) as of 2026-Q2. Top holders: BNP, GOLDMAN, CITIGROUP. Net buying activity: 40 institutions added/increased vs 10 reduced.
Top holders — 2026-Q2
| Fund | Shares | Value | % Tracked | Last move |
|---|---|---|---|---|
| BNP PARIBAS FINANCIAL MARKETS | 16,777,726 | $2.7B | 12.2% | — |
| GOLDMAN SACHS GROUP INC | 15,111,803 | $2.4B | 11.0% | — |
| CITIGROUP INC | 11,612,884 | $1.8B | 8.5% | — |
| MORGAN STANLEY | 10,834,146 | $1.7B | 7.9% | — |
| BANK OF AMERICA CORP /DE/ | 10,566,963 | $1.7B | 7.7% | TRIM -27.2% |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 9,341,500 | $1.5B | 6.8% | — |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 5,533,900 | $875.7M | 4.0% | DOUBLED +428.0% |
| JANE STREET GROUP, LLC | 4,772,500 | $755.2M | 3.5% | ADD +37.0% |
| JANE STREET GROUP, LLC | 4,719,100 | $746.8M | 3.4% | ADD +37.0% |
| WELLS FARGO & COMPANY/MN | 3,504,082 | $554.5M | 2.6% | ADD +27.6% |
Recent position changes
| Fund | Action | Prev | Current | Change | Value |
|---|---|---|---|---|---|
| BANK OF AMERICA CORP /DE/ | TRIM | 14,518,027 | 10,566,963 | -27.2% | $1.7B |
| WELLS FARGO & COMPANY/MN | ADD | 2,746,209 | 3,504,082 | +27.6% | $554.5M |
| JPMORGAN CHASE & CO | TRIM | 6,231,375 | 1,805,715 | -71.0% | $285.9M |
| ROYAL BANK OF CANADA | ADD | 510,065 | 829,993 | +62.7% | $131.3M |
| Jain Global LLC | NEW | — | 591,467 | — | $93.6M |
| BlackRock, Inc. | DOUBLED | 148,817 | 516,032 | +246.8% | $81.7M |
| TUDOR INVESTMENT CORP ET AL | NEW | — | 502,000 | — | $79.4M |
| Clear Street Group Inc. | NEW | — | 500,000 | — | $79.1M |
| CITADEL ADVISORS LLC | NEW | — | 499,184 | — | $79.0M |
| OSAIC HOLDINGS, INC. | DOUBLED | 129,997 | 423,662 | +225.9% | $67.1M |
Short interest & halts
FINRA semi-monthly short positions, Reg SHO threshold status, and recent trading halts for XBI.
Shares short
75,264,165
Settlement Sep 15, 2026
Change vs prior
+1.1%
Semi-monthly cycle
Days to cover
9.9
At avg daily volume