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📈 Private venture marks are stale by design — nobody is paid to fix them

Gurley's structural claim: GPs assess their own portfolio marks (a conflict), and many LPs are bonused on those same paper marks, so neither side has an incentive to push them down. Private venture marks therefore sit far above reality — public growth down ~50% while private books are down 5-10% — until a financing, a secondary, a recap or a down-round IPO forces the reset. The listed read-through is the alt managers and holding companies whose reported NAV is a book of self-assessed private marks.

0 CONVICTION
peaked 80.1 GREEN
EMBER
band
▼ SHORT BX
expression · bearish equities
MISS
outcome · R -37.0% · α -58.3%
2024-08-11
window closed
⚠ CONFLICTING IDEA ON THE SAME TICKER — the board is arguing with itself; net it before trading (ticker view →)
IPO · 2026 is the year of mega-IPOs LONG DORMANT 6.3

also touching these tickers, same direction: Private equity model is broken 14 (BX) · Endowment liquidity crunch forces discounted private-equity secondaries 12 (BX)

⚖ Why this verdict

fully deterministic — evaluate.py replays this from daily closes; nothing below is editable or hand-set

  1. Window: 2023-08-11 → 2024-08-11 — first mention + 12-month horizon, then the window locks.
  2. The call: ▼ SHORT BX (primary play). BX rose 37.0% over the window → direction-adjusted R = -37.0% (the call lost money).
  3. Benchmark: holding SPY over the same window returned +21.3%α = -37.0 − (+21.3) = -58.3% — what this call made or lost against just owning the index. This is the number the verdict uses.
    Stock-selection read: -15.7% — did BX move the predicted way relative to the market. The two only differ on a SHORT: this call was right about direction relative to the index but still cost money versus holding it.
  4. Rule fired:
    · HIT — R ≥ +10% AND α ≥ +5
    · PARTIAL — R ≥ +5% OR α ≥ 0
    ▶ MISS — everything else
  5. Credit: supporters of a MISS earn 0 each, opposers the inverse — this feeds the scoreboard weights. supported: Bill Gurley, Chamath, Jason, Sacks

Conviction timeline

bands: green ≥ 65 · watch ≥ 45 · ember ≥ 15

Plays vs SPY · % since first mention (2023-08-11)

Plays

expressionsymbolkindrelevancerationale
▼ SHORT BXstock PRIMARY alt manager whose fee-earning AUM and equity value ride on self-reported private marks
▼ SHORT IPOetf adjacent recent-IPO cohort is where the private-to-public mark gap actually gets printed
▼ SHORT SFTBYstock adjacent SoftBank's NAV is a book of late-stage private marks that has to converge on public comps

Mention log

BI
Bill Gurley (regular guest ×1.0) equities w=1.11 · n=9 · E141 (2023-08-11) · sentiment · strength 3 ▶ 36:24 SUPPORT
“The other thing is many LPs are actually bonus on the paper mark. And this is something that a lot of people don't realize. And so they don't have an incentive to dial around to the GPs and say, get your marks right, because it's actually going to reflect poorly on them if they were to roll those up.”
Jason
Jason equities w=0.97 · n=105 · E141 (2023-08-11) · sentiment · strength 2 ▶ 36:51 SUPPORT
“Both of the LP and the GP are in a dance there. Hey, we know that Stripe is not worth $100 billion right now. It's worth $50 billion.”
Sacks
Sacks equities w=0.89 · n=96 · E141 (2023-08-11) · sentiment · strength 2 ▶ 1:20:48 SUPPORT
“Think about what that means. If a lot of those unicorns are fake, what does that say about innovation in the American economy?”
Chamath
Chamath equities w=0.84 · n=160 · E142 (2023-08-18) · explicit_prediction · strength 3 ▶ 1:23:41 SUPPORT
“if you look at Adyen, what does it mean about Stripe? And I think the answer is that Stripe at that $50 billion round, $55 billion round is worth 25 billion. So there's a 50% markdown right there.”
Sacks
Sacks equities w=0.89 · n=96 · E142 (2023-08-18) · sentiment · strength 1 ▶ 1:25:10 SUPPORT
“I think you're right. I think that we have a almost perfect comp there.”
Sacks
Sacks equities w=0.89 · n=96 · E146 (2023-09-22) · sentiment · strength 2 ▶ 57:17 SUPPORT
“they're kind of the ceiling, you know? So I think founders still have maybe unrealistic expectations from the days when SaaS businesses were being valued at 100 times ARR”
Jason
Jason equities w=0.97 · n=105 · E146 (2023-09-22) · explicit_prediction · strength 2 ▶ 1:09:05 SUPPORT
“If you look at the Ford price to sales multiple, 78X for an $11.7 billion valuation at $150 million ARR ... Mondays at 12X plus, Asana 66X, and Smartsheet's at just around 8X”
Sacks
Sacks equities w=0.89 · n=96 · E148 (2023-10-07) · explicit_prediction · strength 2 ▶ 2:37 SUPPORT
“we had a segment a couple of weeks ago where we were talking about these high-priced, late-stage unicorn rounds needing to get revalued. The IPO of Instacart was a good example of this where, yes, the IPO did about $10 billion, but the last private round was at $39 billion. So there is a big wave of revaluations or down rounds coming.”
Chamath
Chamath equities w=0.84 · n=160 · E151 (2023-10-27) · explicit_prediction · strength 3 ▶ 44:36 SUPPORT
“the market clearing trade may be 25 to 30 billion now. Now 25 to 30 billion for Stripe, you're incinerating $70 billion of equity value”
Sacks
Sacks equities w=0.89 · n=96 · E151 (2023-10-27) · sentiment · strength 2 ▶ 1:00:58 SUPPORT
“when they have definite buyer interests at a certain price, that tells you that the market now has found or is in the process of finding the market clearing price”
Jason
Jason equities w=0.97 · n=105 · E151 (2023-10-27) · positioning · strength 2 ▶ 1:00:27 SUPPORT
“I've been approached by a number of people who are doing, buying strips of GP interest and strips of LP interest in venture funds”
Chamath
Chamath equities w=0.84 · n=160 · E156 (2023-12-08) · sentiment · strength 3 ▶ 41:14 SUPPORT
“ask a private equity investor what they would buy your position for. That's why I spend a lot of time talking to them because I want to know what this stuff is really worth.”
Sacks
Sacks equities w=0.89 · n=96 · E161 (2024-01-13) · explicit_prediction · strength 2 ▶ 55:36 SUPPORT
“I think a lot of these startups now, if their shares were to be freely traded, would be trading below ... the last round's mark, so they don't want it.”
Chamath
Chamath equities w=0.84 · n=160 · E188 (2024-07-19) · sentiment · strength 3 ▶ 1:03:23 SUPPORT
“But I don't like it. I don't like these kinds of things where one fund is basically scratching the back of another fund. It always tends to be the case that this stuff on the surface looks a little smelly and can be a little unseemly.”
Sacks
Sacks equities w=0.89 · n=96 · E188 (2024-07-19) · sentiment · strength 2 ▶ 1:06:25 SUPPORT
“Normally, what would happen in terms of figuring out the price is you'd want to use some validated secondary price, but obviously, it would have to be a market clearing price where new money wants to come in at that price. This is a little bit different because it's their pre-existing fund that's buying at that price.”

Who built this conviction

each voice's total force on the score — supports and opposes from every mention, weighted exactly as the replay applied them · share = % of all mention-driven movement

Sacks
Sacks w=0.89
7 scoring events · 33% of moves
+39.9 → net +39.9
Chamath
Chamath w=0.84
4 scoring events · 25% of moves
+30.1 → net +30.1
BI
Bill Gurley w=1.11 regular guest ×1.0
1 scoring event · 22% of moves
+26.7 → net +26.7
Jason
Jason w=0.97
3 scoring events · 20% of moves
+24.7 → net +24.7

⏳ decay drained -81.7 over the idea's life — that's time passing, attributed to no one

Score events

episodekindΔafternote
E141 2023-08-11 init +26.7 26.7 E141 born by Bill Gurley (sentiment x3) [w=1.11]
E141 2023-08-11 reinforce +16.0 42.7 E141 Jason support x2 (new voice) [w=0.97]
E141 2023-08-11 reinforce +11.4 54.1 E141 Sacks support x2 (new voice) [w=0.89]
E142 2023-08-18 reinforce +10.4 64.5 E142 Chamath support x3 (new voice) [w=0.84]
E142 2023-08-18 reinforce +3.8 68.3 E142 Sacks support x1 [w=0.89]
E143 2023-08-25 decay -2.7 65.5 E143 silent
E144 2023-09-01 decay -2.6 62.9 E144 silent
E146 2023-09-22 reinforce +4.9 67.8 E146 Sacks support x2 [w=0.89]
E146 2023-09-22 reinforce +4.7 72.5 E146 Jason support x2 [w=0.97]
E147 2023-09-29 decay -2.9 69.6 E147 silent
E148 2023-10-07 reinforce +4.0 73.7 E148 Sacks support x2 [w=0.89]
E149 2023-10-13 decay -2.9 70.7 E149 silent
E150 2023-10-20 decay -2.8 67.9 E150 silent
E151 2023-10-27 reinforce +4.8 72.7 E151 Chamath support x3 [w=0.84]
E151 2023-10-27 reinforce +4.0 76.7 E151 Jason support x2 [w=0.97]
E151 2023-10-27 reinforce +3.1 79.8 E151 Sacks support x2 [w=0.89]
E152 2023-11-03 decay -3.2 76.6 E152 silent
E156 2023-12-08 reinforce +3.5 80.1 E156 Chamath support x3 [w=0.84]
E157 2023-12-16 decay -3.2 76.9 E157 silent
E158 2023-12-23 decay -3.1 73.8 E158 silent
E159 2023-12-29 decay -3.0 70.9 E159 silent
E160 2024-01-06 decay -2.8 68.1 E160 silent
E161 2024-01-13 reinforce +4.2 72.3 E161 Sacks support x2 [w=0.89]
E162 2024-01-19 decay -2.9 69.4 E162 silent
E163 2024-01-26 decay -2.8 66.6 E163 silent
E164 2024-02-02 decay -2.7 64.0 E164 silent
E165 2024-02-09 decay -2.6 61.4 E165 silent
E166 2024-02-16 decay -2.5 59.0 E166 silent
E167 2024-02-23 decay -2.4 56.6 E167 silent
E168 2024-03-01 decay -2.3 54.3 E168 silent
E169 2024-03-08 decay -2.2 52.2 E169 silent
E170 2024-03-15 decay -2.1 50.1 E170 silent
E171 2024-03-22 decay -2.0 48.1 E171 silent
E172 2024-03-29 decay -1.9 46.1 E172 silent
E173 2024-04-05 decay -1.8 44.3 E173 silent
E174 2024-04-12 decay -1.8 42.5 E174 silent
E175 2024-04-19 decay -1.7 40.8 E175 silent
E176 2024-04-26 decay -1.6 39.2 E176 silent
E177 2024-05-03 decay -1.6 37.6 E177 silent
E178 2024-05-10 decay -1.5 36.1 E178 silent
E179 2024-05-17 decay -1.4 34.7 E179 silent
E180 2024-05-24 decay -1.4 33.3 E180 silent
E181 2024-05-31 decay -1.3 32.0 E181 silent
E182 2024-06-07 decay -1.3 30.7 E182 silent
E183 2024-06-14 decay -1.2 29.5 E183 silent
E184 2024-06-20 decay -1.2 28.3 E184 silent
E185 2024-06-29 decay -1.1 27.1 E185 silent
E186 2024-07-04 decay -1.1 26.1 E186 silent
E187 2024-07-12 decay -1.0 25.0 E187 silent
E188 2024-07-19 reinforce +11.3 36.3 E188 Chamath support x3 [w=0.84]
E188 2024-07-19 reinforce +8.5 44.8 E188 Sacks support x2 [w=0.89]
E189 2024-07-26 decay -1.8 43.0 E189 silent
E190 2024-08-02 decay -1.7 41.3 E190 silent
E191 2024-08-09 decay -1.7 39.6 E191 silent