IONS
Ionis Pharmaceuticals, Inc.Open43.03−0.64 −1.47%USD
NasdaqGS · as of Oct 13, 10:18 ET · 15m delay
Open
43.55
Prev close
43.67
Day range
42.8443.58
52-week range
42.6386.74
Volume
165.66K0.05×
Mkt cap
7.15B
P/E ttm
—
Fwd P/E
-38.69
EPS ttm
-3.48
Div yield
0.00%
Earnings
Jul 29, 2026
From 52w high
−50.39%
IONS shareholders
IONS Ownership
13F / N-PORT filings via Yahoo
Institutions
110.3%
111.0% of the float
Insiders
0.6%
officers and directors
Institutional holders
717
filing positions
Top 10 institutions
60.4%
9 adding · 1 trimming
Top Institutions
| Holder | % held | Shares | Value | Change | As of |
|---|---|---|---|---|---|
| FMR, LLC | 14.82% | 24.63M | $1.06B | +0.3% | Jun 30, 2026 |
| Capital World Investors | 13.04% | 21.67M | $932.43M | +2.3% | Jun 30, 2026 |
| Blackrock Inc. | 6.44% | 10.70M | $460.62M | +2.5% | Jun 30, 2026 |
| Vanguard Portfolio Management LLC | 4.73% | 7.86M | $338.20M | +0.6% | Jun 30, 2026 |
| Wellington Management Group, LLP | 4.60% | 7.65M | $329.24M | +19.7% | Jun 30, 2026 |
| Vanguard Capital Management LLC | 4.34% | 7.21M | $310.31M | +1.3% | Jun 30, 2026 |
| Two Sigma Investments, LP | 3.76% | 6.25M | $269.04M | +6.7% | Jun 30, 2026 |
| Royal Bank of Canada | 3.72% | 6.18M | $266.03M | +62.6% | Jun 30, 2026 |
| State Street Corporation | 2.61% | 4.33M | $186.53M | +8.5% | Jun 30, 2026 |
| T. Rowe Price Investment Management, Inc. | 2.38% | 3.96M | $170.37M | −35.7% | Jun 30, 2026 |
Top Funds
| Holder | % held | Shares | Value | Change | As of |
|---|---|---|---|---|---|
| Fidelity Mt. Vernon Street Trust-Fidelity Growth Company Fund | 5.12% | 8.50M | $365.91M | 0.0% | Aug 31, 2026 |
| Growth Fund of America | 4.61% | 7.67M | $329.98M | 0.0% | Jun 30, 2026 |
| VANGUARD SPECIALIZED FUNDS-Vanguard Health Care Fund | 3.74% | 6.21M | $267.33M | +63.3% | Jul 31, 2026 |
| SmallCap World Fund Inc | 3.17% | 5.26M | $226.33M | +18.0% | Jun 30, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund | 3.00% | 4.99M | $214.68M | −0.1% | Jun 30, 2026 |
| New Economy Fund | 2.93% | 4.87M | $209.50M | 0.0% | Jun 30, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund | 2.17% | 3.60M | $154.82M | −0.6% | Jun 30, 2026 |
| Fidelity Mt. Vernon Street Trust-Fidelity Growth Company K6 Fund | 1.44% | 2.39M | $102.94M | 0.0% | Aug 31, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Small-Cap Growth Index Fund | 1.25% | 2.08M | $89.31M | +2.5% | Jun 30, 2026 |
| T. Rowe Price Mid-Cap Growth Fund, Inc. | 1.20% | 2.00M | $86.00M | −27.6% | Jun 30, 2026 |
Institutions report quarterly, up to 45 days after the quarter ends, so these positions can be months old. Change compares the share count with the holder's previous filing. Insider transactions are on the overview page (INSD).