LIGHT STREET CAPITAL MANAGEMENT, LLC 13F: Quarter-over-Quarter Portfolio Changes
LIGHT STREET CAPITAL MANAGEMENT, LLC reported a disclosed portfolio value of approximately $497.3 million in its latest SEC Form 13F-HR filing for Q1 2026, down 23.5% quarter on quarter. Over the quarter, the fund initiated 5 new positions, bought more shares in 10 holdings, trimmed 8 holdings, and exited 6 positions.
LIGHT STREET CAPITAL MANAGEMENT, LLC's top buy was Mks INC. (MKSI) . The fund bought 524.4% more shares, lifting the position's portfolio weight by 5.2 percentage points. Its top sell was Confluent INC (8QR) . The fund exited the position completely after it had accounted for 4.2% of the previous portfolio.
New PositionsQ1 2026
Securities disclosed for the first time in Q1 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Portfolio Weight | History |
|---|---|---|---|
| COUPANG INC | CPNG | 4.0% | Holders → |
| SAMSARA INC | IOT | 2.4% | Holders → |
| BLOOM ENERGY | BE | 1.4% | Holders → |
| DATADOG INC | DDOG | 0.9% | Holders → |
| LUMENTUM HLDGS INC | LITE | 0.4% | Holders → |
Top BuysQ1 2026
The fund's top buys among existing positions in Q1 2026. Ranked by portfolio-weight impact, with the percentage of additional shares shown separately.
| Company | Ticker | Portfolio Weight Change | More Shares | History |
|---|---|---|---|---|
| MKS INC. | MKSI | +5.2% | +524.4% | History → |
| AMAZON.COM | AMZN | +2.8% | +79.6% | History → |
| AMKOR TECHNOLOGY INC | AMKR | +1.9% | +41.4% | Holders → |
| CELLEBRITE DI LTD | CLBT | +0.4% | +30.1% | Holders → |
| JFROG LTD | FROG | +1.0% | +24.5% | History → |
| GITLAB INC | GTLB | +-1.0% | +10.4% | History → |
| GDS HLDGS LTD | GDS | +0.2% | +9.8% | Holders → |
| BROADCOM | AVGO | +1.7% | +4.2% | History → |
| ANALOG DEVICES INC | ADI | +0.2% | +3.4% | Holders → |
| NXP SEMICONDUCTORS N V | NXPI | +0.2% | +2.3% | Holders → |
Top SellsQ1 2026
The fund's top sells among positions it retained in Q1 2026. Ranked by portfolio-weight impact. Full exits are listed separately.
| Company | Ticker | Portfolio Weight Change | Shares Sold | History |
|---|---|---|---|---|
| AMPLITUDE INC | AMPL | -2.3% | 80.5% | Holders → |
| ALPHABET CL A | GOOGL | -4.0% | 68.4% | Holders → |
| BILL HOLDINGS INC | BILL | -2.6% | 28.8% | History → |
| CHIME FINL INC | CHYM | -2.7% | 23.3% | History → |
| NVIDIA CORPORATION COM | NVDA | -0.2% | 19.9% | History → |
| TAIWAN SEMIC-ADR | TSM | 2.9% | 15.2% | History → |
| ASML HLDG NV | ASML | 1.1% | 0.4% | Holders → |
| ADVANCED MICRO DEVICES INC | AMD | 1.7% | 0.1% | History → |
Full ExitsQ1 2026
Positions present in the prior 13F-HR filing that no longer appear in Q1 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| CONFLUENT INC | 8QR | 4.2% |
| CONSTELLATION ENERGY | CEG | 3.4% |
| REDDIT INC | RDDT | 3.2% |
| NETFLIX INC. | NFLX | 2.9% |
| ATLASSIAN CORPORATION | TEAM | 1.6% |
| APPLE | AAPL | 0.4% |
Net Portfolio Value ChangeQ1 2026
- $0.6BPrior quarter
- $0.5BCurrent quarter
- $-0.2BNet delta
- -23.5%% change
Methodology & FAQ
How LIGHT STREET CAPITAL MANAGEMENT, LLC Quarterly Changes Are Computed
All deltas are sourced from sequential SEC Form 13F-HR filings for LIGHT STREET CAPITAL MANAGEMENT, LLC: each row joins the most recent filing against the immediately preceding quarterly filing for the same fund. Share-count changes reflect reported trading activity, while portfolio weights can also move because of market price changes. Portfolio weights are normalized to exclude listed options for comparability. A complete description — including how confidential treatment filings are handled — is documented in the Methodology.
What stocks did LIGHT STREET CAPITAL MANAGEMENT, LLC buy in Q1 2026?
In Q1 2026, LIGHT STREET CAPITAL MANAGEMENT, LLC initiated 5 new positions (COUPANG INC (CPNG), SAMSARA INC (IOT), BLOOM ENERGY (BE), DATADOG INC (DDOG), LUMENTUM HLDGS INC (LITE)); bought more shares of MKS INC. (MKSI), AMAZON.COM (AMZN), AMKOR TECHNOLOGY INC (AMKR), CELLEBRITE DI LTD (CLBT), JFROG LTD (FROG) — the largest 5 of 10 adds.
What stocks did LIGHT STREET CAPITAL MANAGEMENT, LLC sell in Q1 2026?
In Q1 2026, LIGHT STREET CAPITAL MANAGEMENT, LLC fully sold 6 positions (CONFLUENT INC (8QR), CONSTELLATION ENERGY (CEG), REDDIT INC (RDDT), NETFLIX INC. (NFLX), ATLASSIAN CORPORATION (TEAM), APPLE (AAPL)); reduced holdings in AMPLITUDE INC (AMPL), ALPHABET CL A (GOOGL), BILL HOLDINGS INC (BILL), CHIME FINL INC (CHYM), NVIDIA CORPORATION COM (NVDA) — the largest 5 of 8 reductions.
Which positions did LIGHT STREET CAPITAL MANAGEMENT, LLC initiate in Q1 2026?
LIGHT STREET CAPITAL MANAGEMENT, LLC established 5 new positions in Q1 2026: COUPANG INC (CPNG, 4.0%), SAMSARA INC (IOT, 2.4%), BLOOM ENERGY (BE, 1.4%), DATADOG INC (DDOG, 0.9%), LUMENTUM HLDGS INC (LITE, 0.4%).
Which existing positions saw the largest allocation increases for LIGHT STREET CAPITAL MANAGEMENT, LLC in Q1 2026?
Of 10 existing positions with share-count increases in Q1 2026, the largest were: MKS INC. (MKSI, +5.2% weight, +524.4% shares), AMAZON.COM (AMZN, +2.8% weight, +79.6% shares), AMKOR TECHNOLOGY INC (AMKR, +1.9% weight, +41.4% shares), CELLEBRITE DI LTD (CLBT, +0.4% weight, +30.1% shares), JFROG LTD (FROG, +1.0% weight, +24.5% shares), GITLAB INC (GTLB, +-1.0% weight, +10.4% shares), GDS HLDGS LTD (GDS, +0.2% weight, +9.8% shares), BROADCOM (AVGO, +1.7% weight, +4.2% shares), ANALOG DEVICES INC (ADI, +0.2% weight, +3.4% shares), NXP SEMICONDUCTORS N V (NXPI, +0.2% weight, +2.3% shares).
Which positions did LIGHT STREET CAPITAL MANAGEMENT, LLC fully exit in Q1 2026?
LIGHT STREET CAPITAL MANAGEMENT, LLC fully exited 6 positions in Q1 2026: CONFLUENT INC (8QR, last-reported weight 4.2%), CONSTELLATION ENERGY (CEG, last-reported weight 3.4%), REDDIT INC (RDDT, last-reported weight 3.2%), NETFLIX INC. (NFLX, last-reported weight 2.9%), ATLASSIAN CORPORATION (TEAM, last-reported weight 1.6%), APPLE (AAPL, last-reported weight 0.4%).
Which existing positions saw the largest allocation reductions for LIGHT STREET CAPITAL MANAGEMENT, LLC in Q1 2026?
Of 8 existing positions with share-count reductions in Q1 2026, the largest were: AMPLITUDE INC (AMPL, -2.3% weight, -80.5% shares), ALPHABET CL A (GOOGL, -4.0% weight, -68.4% shares), BILL HOLDINGS INC (BILL, -2.6% weight, -28.8% shares), CHIME FINL INC (CHYM, -2.7% weight, -23.3% shares), NVIDIA CORPORATION COM (NVDA, -0.2% weight, -19.9% shares), TAIWAN SEMIC-ADR (TSM, 2.9% weight, -15.2% shares), ASML HLDG NV (ASML, 1.1% weight, -0.4% shares), ADVANCED MICRO DEVICES INC (AMD, 1.7% weight, -0.1% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity. All deltas on this page are sourced from sequential SEC Form 13F-HR filings.