Articles by Jennifer Song
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Leopold Aschenbrenner's fund owns 21.1% of SharonAI (SHAZ). It's currently sitting $101 million below cost.
Situational Awareness filed a Schedule 13D reporting 8,070,950 SharonAI (SHAZ) shares at a cost of $523.9 million. The same position was in its filings before the fund's July losses, and it's still there.
Ameresco (AMRC) insiders bought more stock at $21, two weeks after buying at $25
Founder-CEO George Sakellaris and three Ameresco directors bought about $559,000 of AMRC stock near $21, about 15 percent below the same insiders' early-August buys near $25.
Seagate (STX)'s CEO and four other executives sold $43 million in 48 hours. The stock fell 6.5% three days later.
Five Seagate (STX) executives filed Forms 4 on Aug. 24 covering $43.3 million in stock sold on Aug. 20 and 21, three of them with no 10b5-1 plan attached. STX closed down 6.5% from those sale prices the day the filings hit.
Nancy Pelosi opened a new Bloom Energy (BE) position worth up to $12 million in late July
Nancy Pelosi's financial disclosure, filed August 21, shows a first-time position in Bloom Energy (BE): about 15,000 shares and 200 call options worth $3 million to $12 million, her biggest new single-name bet of 2026. The same filing adds 10,000 shares and 50 call options of Intel (INTC), on top of the Intel options she reported in June.
Trump's latest disclosure shows five Berkshire trades among 1,051 June transactions
President Trump's latest financial disclosure, filed August 12 and published August 22, lists 1,051 stock, bond and ETF transactions from June. Berkshire Hathaway (BRK.B) turns out to have been bought three times and sold twice that month, not purchased once as early coverage suggested, and the filing's largest single trade was a $5 million to $25 million sale of the Vanguard Dividend Appreciation ETF (VIG).
Lee Ainslie's Maverick Capital held 20 million Infleqtion (INFQ) shares in February. Now it has 1.4 million left.
Lee Ainslie's Maverick Capital has reported about $266 million of Infleqtion (INFQ) stock sales since May, and Friday's filing shows the wind-down is nearly finished. A stake that started at 20 million shares in February is down to 1.4 million, and an August misstep means Maverick owes Infleqtion a $299,922.51 check.
Ken Griffin says Citadel has closed out 80% of Leopold Aschenbrenner's Situational Awareness risk
Griffin's first comment on the Situational Awareness purchase came in a Friday letter to clients. It took more than 100 block trades over $4 billion of market value to retire four fifths of the risk.
Palantir (PLTR) CEO Alex Karp filed to sell $86 million in stock after a 31% rally
Two SEC filings show Palantir CEO Alex Karp intends to sell $86.1 million in stock, the same week PLTR closed at a new high after its Q2 earnings beat.
Keel Infrastructure (KEEL) COO bought stock twice this week, and paid 14% less the second time
On Aug. 20, Keel Infrastructure's (KEEL) chief operating officer filed a second Form 4 in three days, buying more stock at $3.25, about 14% below what he paid on Aug. 17.
FedEx and UPS are each getting about $2.7 billion to keep delivering for the military through 2030
FedEx and UPS were each awarded about $2.72 billion in a modified Pentagon contract for continued military package delivery, part of a $5.72 billion combined award with Polar Air Cargo Worldwide running through September 2030.
HIVE Digital (HIVE) director sold every share he owned. The next day, Bitcoin's rally sent the stock up.
HIVE director Dave Perrill sold all 100,000 shares he held directly on August 19, the second time this year he's sold every share he owned. The next morning, Bitcoin rallied and HIVE Digital Technologies climbed with it. Four different HIVE insiders have filed six Form 4 sales since June, and none have bought.
Six Iridium (IRDM) insiders sell $19.3M below Rocket Lab's $54 deal value
Rocket Lab agreed to pay Iridium a notional $54 a share. In one week, six insiders sold $19.3 million of IRDM stock near $50, none of it under a trading plan.
Serve Robotics (SERV) CEO, COO and CFO all sold stock this week, and only half of it was mandatory
On Aug. 19, Serve Robotics' CEO, COO and CFO all filed Form 4s covering sales from Aug. 17-19, about 124,000 shares for $585,000 combined, and about half of it wasn't tied to mandatory tax withholding.
Cerebras showed up in 16 hedge fund filings at once, worth $4.6 billion. Insiders just filed to sell $49 million in stock.
Altimeter reported $1.60 billion of Cerebras and Coatue $1.55 billion. Between them that is two thirds of the $4.64 billion disclosed across 16 funds.
AMD insider sells $7.7 million near the stock's peak, but there's more to the story
AMD's chief sales officer, Paul Darren Grasby, sold $7.72 million of stock on Aug. 17 with no 10b5-1 plan behind it. It looks alarming until you notice it's his fifth open-market sale in a year.
Leopold Aschenbrenner's latest filing shows he closed 13 of his 16 options positions and moved more than half his fund into SanDisk and Micron
Situational Awareness LP reported $8.46 billion of put positions on March 31 and one on June 30. The money went into SanDisk, Micron, Nebius and STMicroelectronics.
Warren Buffett's Berkshire nearly doubled its Alphabet (GOOGL) stake, now bigger than Coca-Cola
Berkshire added 48.1 million Alphabet shares in the June quarter and increased its Class C holding by 658 percent. The stake passed Coca-Cola to rank third.
Two Datadog (DDOG) directors sold $20 million of stock on the same day
Two Datadog directors, both ICONIQ Growth partners, sold about $20 million of DDOG on August 13. One sale ran on a plan set in March, the other was the director's own call, and neither bought.
Kratos' CEO had to announce his $19 million KTOS sale before he made it. That filing is a Form 144.
Kratos CEO Eric DeMarco sold $19.3 million of KTOS stock last week, and a Form 144 flagged it first. Here is what that notice is, how it differs from a Form 4, and why a planned sale is not the warning it looks like.
Another Bitdeer (BTDR) executive bought the stock near the post-earnings lows
Bitdeer (BTDR) chief strategy officer Basit Fozan bought 25,000 shares at $8.84 on August 14, days after the finance chief bought a nearly identical stake. Both executives paid more than 40 percent below their own $15.44 option strike, stepping in near the low that followed the August 10 earnings.
The oddest stock in Trump's portfolio is Korean: 18 Coupang (CPNG) trades as Washington challenged Seoul
Trump's disclosures show 18 Coupang (CPNG) trades across two accounts in eight months, the biggest of them landing while his own administration was accusing Seoul of persecuting the company.
Saudi Arabia's wealth fund now holds $26 billion of SpaceX (SPCX). That's 70% of its US stock book.
Saudi Arabia's sovereign wealth fund now holds more SpaceX than any other US stock, a $26 billion position that surfaced in a 13F this week. A 13F only tells part of the story, though.
Hedge Fund Citadel already held every stock in Leopold Aschenbrenner's book before buying it
Citadel's own quarterly filing, out Friday, already listed every stock in Leopold Aschenbrenner's book, about a month before it bought the book. The catch is what those holdings actually mean.
How to track what Congress, Hedge Funds and Insiders are buying and selling.
Congress, hedge funds and company insiders all have to disclose their trades. Here is where each one files, what the timing means, and where to watch all three live.