Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5276
PUT
AerSale
ASLE
$308M
| $118K | ﹤0.01% |
6,400
-6,900
| -52% | -$128K |
|
5277
Century Aluminum
CENX
$4.66B
| $118K | ﹤0.01% |
22,437
-293
| -1% | -$2.23K |
|
5278
CALL
CPS Technologies
CPSH
$81.9M
| $118K | ﹤0.01% |
42,200
+6,000
| +17% | +$20.3K |
|
5279
CALL
Capital Southwest
CSWC
$1.54B
| $118K | ﹤0.01% |
7,000
-900
| -11% | -$17.3K |
|
5280
CALL
Ichor Holdings
ICHR
$2.48B
| $118K | ﹤0.01% |
4,900
-1,000
| -17% | -$29.6K |
|
5281
CALL
Energy Vault
NRGV
$591M
| $118K | ﹤0.01% |
22,400
-145,300
| -87% | -$789K |
|
5282
CALL
Patrick Industries
PATK
$2.88B
| $118K | ﹤0.01% |
4,050
+3,600
| +800% | +$131K |
|
5283
PUT
Playtika
PLTK
$1.54B
| $118K | ﹤0.01% |
12,600
+400
| +3% | +$4.61K |
|
|
MORF
5284
CALL
DELISTED
Morphic Holding, Inc. Common Stock
MORF
| $118K | ﹤0.01% |
4,200
+100
| +2% | +$2.79K |
|
5285
PUT
Bionano Genomics
BNGO
$12.9M
| $117K | ﹤0.01% |
107
+28
| +35% | +$37K |
|
5286
PUT
Traeger
COOK
$191M
| $117K | ﹤0.01% |
832
+678
| +440% | +$115K |
|
5287
CALL
Cooper-Standard Automotive
CPS
$546M
| $117K | ﹤0.01% |
20,100
+10,200
| +103% | +$71.9K |
|
5288
CALL
Carter's
CRI
$1.46B
| $117K | ﹤0.01% |
1,800
+1,700
| +1,700% | +$130K |
|
5289
PUT
Ecopetrol
EC
$33.5B
| $117K | ﹤0.01% |
13,200
+11,700
| +780% | +$120K |
|
|
KYNB
5290
Kyntra Bio
KYNB
$28M
| $117K | ﹤0.01% |
361
+195
| +117% | +$62.8K |
|
5291
PUT
Fortis
FTS
$28.9B
| $117K | ﹤0.01% |
3,100
+2,000
| +182% | +$90.5K |
|
5292
CALL
Invesco CurrencyShares Swiss Franc Trust
FXF
$397M
| $117K | ﹤0.01% |
1,300
-1,400
| -52% | -$130K |
|
5293
CALL
Hycroft Mining Holding Corp
HYMC
$2.08B
| $117K | ﹤0.01% |
19,490
-3,420
| -15% | -$30.4K |
|
5294
Lightwave Logic
LWLG
$1.22B
| $117K | ﹤0.01% |
16,032
-1,052
| -6% | -$9.86K |
|
5295
CALL
Ouster
OUST
$3.22B
| $117K | ﹤0.01% |
12,190
-1,730
| -12% | -$26.6K |
|
5296
CALL
Perrigo
PRGO
$1.49B
| $117K | ﹤0.01% |
3,300
-58,200
| -95% | -$2.34M |
|
5297
CALL
The RealReal
REAL
$1.53B
| $117K | ﹤0.01% |
78,300
+800
| +1% | +$1.93K |
|
5298
PUT
TETRA Technologies
TTI
$1.28B
| $117K | ﹤0.01% |
32,800
+30,400
| +1,267% | +$120K |
|
5299
Upbound Group
UPBD
$1.2B
| $117K | ﹤0.01% |
+6,686
| New | +$166K |
|
|
LOGC
5300
DELISTED
ContextLogic
LOGC
| $117K | ﹤0.01% |
5,330
+2,676
| +101% | +$111K |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.