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Livermore
Livermore
ZHEN

Lightspeed Management Company, L.L.C.

SEC CIK
0001702122
Latest filing
Aug 14, 2026

The latest 13F from Lightspeed Management Company, L.L.C. covers Q2 2026 (filed Aug 14, 2026): 8 long positions worth $2.40B. The top 10 holdings make up 100.0% of the portfolio, and the largest is Space Exploration Technologies Corp (SPCX) at 51.9%. Livermore has 8 filings on Form 13F from this institution, going back to Q4 2024.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
2
Est. +$1.31B
Added
0
Reduced
3
Est. −$218.8M
Sold out
2
Est. −$199.3M

Top 5 holdings

Share of this quarter's portfolio value

  1. SPCXSpace Exploration Technologies Corp
    51.9%$1.25BHistory
  2. NAVNNavan, Inc.
    39.7%$953.6MHistory
  3. PSNLPersonalis, Inc.
    3.4%$81.8MHistory
  4. ODTXOdyssey Therapeutics, Inc.
    2.8%$67.5MHistory
  5. KDKKodiak AI, Inc.
    1.6%$37.3MHistory

Share of portfolio

Top 5 holdings and the other 3 positions, by share of portfolio value

  1. SPCX51.9%
  2. NAVN39.7%
  3. PSNL3.4%
  4. ODTX2.8%
  5. KDK1.6%
  6. Other 3 positions0.7%

Biggest buys

New and added positions, by estimated amount bought

  1. SPCXSpace Exploration Technologies Corp
    +$1.25BNewHistory
  2. ODTXOdyssey Therapeutics, Inc.
    +$67.5MNewHistory

Largest weight increases

New and added positions, by percentage points of the portfolio gained

  1. SPCXSpace Exploration Technologies Corp
    +51.86 pp0.0% → 51.9%History
  2. ODTXOdyssey Therapeutics, Inc.
    +2.81 pp0.0% → 2.8%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. NAVNNavan, Inc.
    −$188.1MReducedHistory
  2. NOWServiceNow, Inc.
    −$160.0MSold outHistory
  3. BLNDBlend Labs, Inc.
    −$39.3MSold outHistory
  4. PSNLPersonalis, Inc.
    −$27.6MReducedHistory
  5. FIGFigma, Inc.
    −$3.13MReducedHistory

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

  1. NAVNNavan, Inc.
    −27.25 pp66.9% → 39.7%History
  2. NOWServiceNow, Inc.
    −16.20 pp16.2% → 0.0%History
  3. BLNDBlend Labs, Inc.
    −3.98 pp4.0% → 0.0%History
  4. PSNLPersonalis, Inc.
    −1.86 pp5.3% → 3.4%History
  5. FIGFigma, Inc.
    −0.38 pp0.4% → <0.1%History

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$2.40B
+$1.42B (+143.4%) vs. prior quarter
Positions
8
0 vs. prior quarter
Top 10 concentration
100.0%
Top 10 as share of value
Turnover
24.6%
Q2 2026, one quarter
Average holding period
2.1 quarters
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q4 2024), so positions held before then are understated.

13F filings by quarter

7 quarters, going back to Q4 2024. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $2.40B (Q2 2026)

Q4 2024: $283.6MQ1 2025: $136.5MQ2 2025: $238.8MQ3 2025: $322.0MQ4 2025: $1.40BQ1 2026: $988.0MQ2 2026: $2.40B
Q4 2024Q2 2026
13F filings of Lightspeed Management Company, L.L.C. by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 20268$2.40BSPCXNAVNPSNLvs. Q1 2026SEC
Q1 2026May 15, 20268$988.0MNAVNNOWPSNLvs. Q4 2025SEC
Q4 2025Feb 17, 20267$1.40BNAVNNOWKDKvs. Q3 2025SEC
Q3 2025Nov 14, 20256$322.0MBULLBLNDPSNLvs. Q2 2025SEC
Q2 2025Aug 14, 20256$238.8MBULLBLNDPSNLvs. Q1 2025SEC
Q1 2025May 15, 20259$136.5MBLNDPSNLGRABvs. Q4 2024SEC
Q4 2024May 15, 2025Amended10$283.6MHSAIBLNDPSNL–SEC

13D and 13G filings

Companies where Lightspeed Management Company, L.L.C. reports owning 5% or more on Schedule 13D or 13G, and its latest filings.

Current stakes of 5% or more

Lightspeed Management Company, L.L.C. does not currently report owning 5% or more of any company.

Latest filings

4 filings on file made by Lightspeed Management Company, L.L.C. or listing it as a reporting person, newest first.

Schedule 13D and 13G filings by Lightspeed Management Company, L.L.C.
CompanyFiled (ET)FilerFormStakeChangeEvent dateFiling
NAVNNavan, Inc.Aug 14, 20264:32 PM ETLightspeed Venture Partners X, L.P.and 16 others13G/A8.40%20.1M shares−1.70 ppfrom 10.10%Jun 30, 2026SEC
RBRKRubrik, Inc.Feb 17, 20267:01 PM ETLightspeed Venture Partners IX, L.P.and 13 others13G/A2.80%4.40M shares−6.30 ppfrom 9.10%Below 5%Dec 31, 2025SEC
RBRKRubrik, Inc.Aug 14, 20254:50 PM ETLightspeed Venture Partners IX, L.P.and 16 others13G/A9.10%13.4M shares−9.00 ppfrom 18.10%Jun 30, 2025SEC
RBRKRubrik, Inc.May 15, 20254:37 PM ETLightspeed Venture Partners IX, L.P.and 17 others13G/A18.10%22.8M shares–Mar 31, 2025SEC