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About 8.62% of RAIN shares are held by financial institutions. is the top corporate investor, holding 50.02K shares valued at $60.02K. A 0.14% stake in Rain Enhancement Technologies Holdco Inc is owned by the company. GROUP ONE TRADING, L.P. owns 2.56K shares valued at $3.07K, which translates its holding of 0.01% of the stake in the company.
| Date | Holder | % Stake | Shares Held | Total Value ($) | Shares | % Change in Portfolio |
|---|---|---|---|---|---|---|
| Dec 31, 2023 | 0.14% | 50.02K | 60.02K | 50.02K | +100.00% | |
| Dec 31, 2023 | GROUP ONE TRADING, L.P. | 0.01% | 2.56K | 3.07K | -14.79K | -85.25% |
| Dec 31, 2023 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 0.22% | 81.5K | 97.8K | 25K | +44.25% |
| Dec 31, 2023 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.18% | 66.94K | 80.33K | 66.94K | +100.00% |
| Dec 31, 2023 | PENDERFUND CAPITAL MANAGEMENT LTD. | 0.11% | 38.65K | 61.46K | 38.65K | +100.00% |
| Dec 31, 2023 | ANSON FUNDS MANAGEMENT LP | 0.09% | 33.57K | 40.28K | 33.57K | +100.00% |
| Dec 31, 2023 | VIRTU FINANCIAL LLC | 0.09% | 33.34K | 40K | 33.34K | +100.00% |
| Dec 31, 2023 | UBS GROUP AG | 0.08% | 29.29K | 35.15K | 20.64K | +238.74% |
| Dec 31, 2023 | BARCLAYS PLC | 0.07% | 24.01K | 29K | 21.57K | +883.74% |
| Dec 31, 2023 | HORIZON KINETICS ASSET MANAGEMENT LLC | 0.07% | 23.99K | 28.79K | -1.01K | -4.03% |
| Dec 31, 2023 | AMERICAN INTERNATIONAL GROUP, INC. | 0.02% | 8.78K | 10.54K | 303 | +3.57% |
| Dec 31, 2023 | TANG CAPITAL MANAGEMENT LLC | 10.59% | 3.85M | 4.62M | 110.17K | +2.95% |
| Dec 31, 2023 | CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 0.01% | 2.91K | 3.49K | -841 | -22.43% |
| Dec 31, 2023 | MARQUETTE ASSET MANAGEMENT, LLC | 0.28% | 101.52K | 121.83K | 17.39K | +20.67% |
| Dec 31, 2023 | STRS OHIO | 0.28% | 100.1K | 120K | 0 | 0 |
| Dec 31, 2023 | TWO SIGMA INVESTMENTS, LP | 0.3% | 110.35K | 132.42K | -75.54K | -40.64% |
| Dec 31, 2023 | BOXER CAPITAL, LLC | 3.17% | 1.15M | 1.38M | 0 | 0 |
| Dec 31, 2023 | GTS SECURITIES LLC | 0.14% | 50.02K | 60.02K | 50.02K | +100.00% |
| Dec 31, 2023 | BANK OF NEW YORK MELLON CORP | 0.11% | 41.8K | 50.16K | 0 | 0 |
| Dec 31, 2023 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.11% | 38.82K | 46.59K | 0 | 0 |
| Dec 31, 2023 | CITADEL ADVISORS LLC | 0.08% | 28.49K | 34.19K | 27.73K | +3,629.19% |
| Dec 31, 2023 | RUSSELL INVESTMENTS GROUP, LTD. | 0.07% | 25.01K | 30.01K | -370.93K | -93.68% |
| Dec 31, 2023 | ADVISOR GROUP HOLDINGS, INC. | 0.07% | 23.84K | 28.6K | 1.05K | +4.61% |
| Dec 31, 2023 | RENAISSANCE TECHNOLOGIES LLC | 0.03% | 11.1K | 13K | 11.1K | +100.00% |
| Dec 31, 2023 | ROYAL BANK OF CANADA | 0.01% | 3.77K | 5K | 1.1K | +41.09% |
| Dec 31, 2023 | CITIGROUP INC | 0.01% | 2.58K | 3.1K | 2.34K | +954.69% |
| Dec 31, 2023 | ACUITAS INVESTMENTS, LLC | 1.13% | 410.46K | 539.3K | 1.21K | +0.30% |
| Dec 31, 2023 | BVF INC/IL | 9.7% | 3.53M | 4.23M | 0 | 0 |
| Dec 31, 2023 | SAMSARA BIOCAPITAL, LLC | 5.59% | 2.03M | 2.44M | 0 | 0 |
| Dec 31, 2023 | BML CAPITAL MANAGEMENT, LLC | 3.71% | 1.35M | 1.62M | 1.28M | +1,749.83% |
| Dec 31, 2023 | BLACKROCK INC. | 3% | 1.09M | 1.31M | 75.32K | +7.42% |
| Dec 31, 2023 | VANGUARD GROUP INC | 2.4% | 872.46K | 1.05M | -30.21K | -3.35% |
| Dec 31, 2023 | DELTEC ASSET MANAGEMENT LLC | 1.03% | 373.98K | 448.77K | 373.98K | +100.00% |
| Dec 31, 2023 | GEODE CAPITAL MANAGEMENT, LLC | 0.91% | 331.06K | 397.35K | 1.84K | +0.56% |
| Dec 31, 2023 | STATE STREET CORP | 0.63% | 228.12K | 273.75K | 0 | 0 |
| Dec 31, 2023 | EXCHANGE TRADED CONCEPTS, LLC | 0.47% | 170.55K | 204.67K | 43.25K | +33.97% |
| Dec 31, 2023 | TWO SIGMA ADVISERS, LP | 0.43% | 157.1K | 188.52K | -59.8K | -27.57% |
| Dec 31, 2023 | NORTHERN TRUST CORP | 0.32% | 115.86K | 139.03K | 24.71K | +27.11% |
| Dec 31, 2023 | MORGAN STANLEY | 0.13% | 46.53K | 55.83K | 28.44K | +157.28% |
| Dec 31, 2023 | JANE STREET GROUP, LLC | 0.12% | 45.21K | 54.25K | 45.21K | +100.00% |
| Dec 31, 2023 | ALLIANCEBERNSTEIN L.P. | 0.12% | 42.58K | 51.1K | 0 | 0 |
| Dec 31, 2023 | NEUBERGER BERMAN GROUP LLC | 0.06% | 21.74K | 26.09K | 9.53K | +78.04% |
| Dec 31, 2023 | SHAY CAPITAL LLC | 0.06% | 21.6K | 25.92K | -10.13K | -31.93% |
| Dec 31, 2023 | BANK OF AMERICA CORP /DE/ | 0.05% | 19.22K | 23.07K | 8.2K | +74.32% |
| Dec 31, 2023 | JPMORGAN CHASE & CO | 0.05% | 17.22K | 20.66K | 5.75K | +50.17% |
| Dec 31, 2023 | SEI INVESTMENTS CO | 0.05% | 16.73K | 20.08K | 0 | 0 |
| Dec 31, 2023 | NUVEEN ASSET MANAGEMENT, LLC | 0.05% | 16.73K | 20.08K | 16.73K | +100.00% |
| Dec 31, 2023 | RHUMBLINE ADVISERS | 0.04% | 16.01K | 19.2K | -2.31K | -12.61% |
| Dec 31, 2023 | TOWER RESEARCH CAPITAL LLC (TRC) | 0.02% | 8.32K | 9.98K | 1.97K | +31.02% |
| Dec 31, 2023 | WELLS FARGO & COMPANY/MN | 0.01% | 5.25K | 6.29K | 1.22K | +30.38% |
| Dec 31, 2023 | ADVISORY SERVICES NETWORK, LLC | 0.01% | 4.24K | 5.09K | 4.24K | +100.00% |
| Dec 31, 2023 | FMR LLC | 0.09% | 32.05K | 38.47K | 17.68K | +123.05% |
Among the RAIN insiders holding of 79.6% of the stake in company, TANG KEVIN C, 10 percent owner, holds the largest shares of 3.85M. CORMORANT ASSET MANAGEMENT, LP, , is the second largest RAIN insider with ownership of 2.78M shares. PERCEPTIVE ADVISORS LLC, 10 percent owner, stands third with possession of 2.49M shares of that stake.
| Insiders | Designation | Shares Held |
|---|---|---|
| TANG KEVIN C | 10 percent owner | 3.85M |
| CORMORANT ASSET MANAGEMENT, LP | 2.78M | |
| PERCEPTIVE ADVISORS LLC | 10 percent owner | 2.49M |
| VELLANKI AVANISH | Chairman and CEO | 2.47M |
| DAVIS AARON I. | director | 2.15M |
| BOXER CAPITAL, LLC | 1.15M | |
| BERGER FRANKLIN M | director | 1.01M |
| BVF PARTNERS L P/IL | director | 341.55K |
| DICKERSON LYMAN B | director | 10.25K |
| Date | Insider | Type | Cost | Shares | Value ($) | Shares Total |
|---|---|---|---|---|---|---|
| Sep 12, 2025 | DICKERSON LYMAN B | SALE | 5.78 | 4.79K | 27.67K | 10.25K |
| Sep 11, 2025 | DICKERSON LYMAN B | SALE | 5.80 | 398 | 2.31K | 15.03K |
| Sep 10, 2025 | DICKERSON LYMAN B | SALE | 5.55 | 215 | 1.19K | 15.43K |
| Sep 09, 2025 | DICKERSON LYMAN B | SALE | 5.24 | 1.92K | 10.05K | 15.65K |
| Dec 18, 2023 | TANG KEVIN C | SALE | 1.21 | 40.13K | 48.56K | 3.85M |
| Dec 15, 2023 | TANG KEVIN C | SALE | 1.20 | 109.44K | 131.32K | 3.89M |
| Dec 14, 2023 | TANG KEVIN C | SALE | 1.21 | 24.41K | 29.53K | 4M |
| Oct 13, 2023 | TANG KEVIN C | PURCHASE | 0.99 | 47.49K | 47.01K | 3.94M |
| Oct 12, 2023 | TANG KEVIN C | PURCHASE | 0.98 | 25.19K | 24.68K | 3.84M |
| Oct 11, 2023 | TANG KEVIN C | PURCHASE | 0.97 | 74.81K | 72.57K | 3.82M |
| Jun 01, 2023 | TANG KEVIN C | PURCHASE | 1.09 | 92.98K | 101.35K | 3.5M |
| May 31, 2023 | TANG KEVIN C | PURCHASE | 1.08 | 161.18K | 174.07K | 3.4M |
| May 30, 2023 | TANG KEVIN C | PURCHASE | 1.05 | 347.93K | 365.33K | 3M |
| May 22, 2023 | BOXER CAPITAL, LLC | SALE | 1.25 | 995K | 1.24M | 1.15M |
| Nov 22, 2022 | BERGER FRANKLIN M | PURCHASE | 8.27 | 77K | 636.79K | 1.01M |
| Nov 21, 2022 | BERGER FRANKLIN M | PURCHASE | 7.80 | 45K | 351K | 928.21K |
| Nov 08, 2022 | BVF PARTNERS L P/IL | PURCHASE | 5.83 | 54.86K | 319.82K | 341.55K |
| Nov 08, 2022 | BERGER FRANKLIN M | PURCHASE | 5.83 | 42.88K | 250K | 883.21K |
| Nov 04, 2022 | DAVIS AARON I. | PURCHASE | 5.83 | 972.21K | 5.67M | 2.15M |
| Jun 01, 2022 | VELLANKI AVANISH | PURCHASE | 2.29 | 25K | 57.25K | 2.47M |
| Jan 07, 2022 | BVF PARTNERS L P/IL | PURCHASE | 12.00 | 14.81K | 177.67K | 185.39K |
| Jan 06, 2022 | BVF PARTNERS L P/IL | PURCHASE | 12.00 | 61.34K | 736.02K | 1.14M |
| Oct 12, 2021 | PERCEPTIVE ADVISORS LLC | SALE | 13.40 | 7.31K | 97.9K | 2.49M |
| Oct 11, 2021 | PERCEPTIVE ADVISORS LLC | SALE | 13.15 | 9.35K | 122.97K | 2.49M |
| Oct 08, 2021 | PERCEPTIVE ADVISORS LLC | SALE | 13.66 | 2.46K | 33.63K | 2.52M |
| Oct 07, 2021 | PERCEPTIVE ADVISORS LLC | SALE | 15.05 | 286 | 4.3K | 2.52M |
| Sep 21, 2021 | BVF PARTNERS L P/IL | PURCHASE | 13.94 | 590 | 8.23K | 170.58K |
| Sep 21, 2021 | BERGER FRANKLIN M | PURCHASE | 14.30 | 3.79K | 54.14K | 840.33K |
| Sep 13, 2021 | BVF PARTNERS L P/IL | PURCHASE | 16.49 | 20.51K | 338.24K | 169.99K |
| Jul 06, 2021 | BVF PARTNERS L P/IL | PURCHASE | 15.25 | 16.98K | 258.95K | 149.48K |
| Jul 01, 2021 | BVF PARTNERS L P/IL | PURCHASE | 15.65 | 20.02K | 313.28K | 132.5K |
| May 24, 2021 | BVF PARTNERS L P/IL | PURCHASE | 15.90 | 129 | 2.05K | 112.48K |
| May 21, 2021 | BVF PARTNERS L P/IL | PURCHASE | 15.94 | 7.59K | 121.03K | 112.35K |
| May 19, 2021 | BVF PARTNERS L P/IL | PURCHASE | 15.88 | 1.12K | 17.71K | 104.76K |
| May 18, 2021 | BVF PARTNERS L P/IL | PURCHASE | 16.65 | 11.95K | 198.9K | 103.65K |
| May 13, 2021 | BVF PARTNERS L P/IL | PURCHASE | 14.26 | 3.47K | 49.54K | 91.7K |
| Apr 27, 2021 | PERCEPTIVE ADVISORS LLC | PURCHASE | 17.00 | 550K | 9.35M | 2.54M |
| Apr 27, 2021 | DAVIS AARON I. | PURCHASE | 17.00 | 1.03M | 17.43M | 1.18M |
| Apr 27, 2021 | BOXER CAPITAL, LLC | PURCHASE | 17.00 | 1.03M | 17.43M | 1.18M |
| Apr 27, 2021 | CORMORANT ASSET MANAGEMENT, LP | PURCHASE | 17.00 | 450K | 7.65M | 2.78M |
| Apr 26, 2021 | BVF PARTNERS L P/IL | PURCHASE | 14.90 | 1.75K | 26.03K | 88.23K |
| Apr 23, 2021 | BOXER CAPITAL, LLC | PURCHASE | 15.58 | 25K | 389.5K | 25K |
| Apr 23, 2021 | DAVIS AARON I. | PURCHASE | 15.58 | 25K | 389.5K | 25K |
| Apr 23, 2021 | BVF PARTNERS L P/IL | PURCHASE | 17.00 | 62.95K | 1.07M | 80.34K |
| Apr 23, 2021 | BERGER FRANKLIN M | PURCHASE | 17.00 | 120K | 2.04M | 120K |