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 | |
|---|---|---|---|---|---|---|
7301
Assurant
AIZ
$13.9B
| $24K | ﹤0.01% |
+170
| New | +$27.8K |
|
7302
Alamo Group
ALG
$1.95B
| $24K | ﹤0.01% |
200
+100
| +100% | +$12.7K |
|
7303
ARKO Corp
ARKO
$889M
| $24K | ﹤0.01% |
2,625
+828
| +46% | +$7.86K |
|
7304
CALL
Astec Industries
ASTE
$1.18B
| $24K | ﹤0.01% |
800
-3,000
| -79% | -$122K |
|
7305
PUT
Brookfield Infrastructure
BIPC
$5.16B
| $24K | ﹤0.01% |
600
-150
| -20% | -$6.9K |
|
7306
CrossAmerica Partners
CAPL
$846M
| $24K | ﹤0.01% |
1,335
+1,231
| +1,184% | +$25.4K |
|
7307
VanEck Oil Refiners ETF
CRAK
$212M
| $24K | ﹤0.01% |
903
+189
| +26% | +$5.54K |
|
7308
PUT
Sprinklr
CXM
$1.49B
| $24K | ﹤0.01% |
2,700
-5,100
| -65% | -$57.4K |
|
|
DAWN
7309
PUT
DELISTED
Day One Biopharmaceuticals
DAWN
| $24K | ﹤0.01% |
1,200
-45,400
| -97% | -$966K |
|
7310
PUT
Evolus
EOLS
$379M
| $24K | ﹤0.01% |
3,000
+300
| +11% | +$3.18K |
|
7311
CALL
Four Corners Property Trust
FCPT
$2.78B
| $24K | ﹤0.01% |
1,000
+300
| +43% | +$8.23K |
|
|
7312
PUT
Four Corners Property Trust
FCPT
$2.78B
| $24K | ﹤0.01% |
+1,000
| New | +$27.4K |
|
7313
iShares Self-Driving EV and Tech ETF
IDRV
$125M
| $24K | ﹤0.01% |
+735
| New | +$28.5K |
|
7314
CALL
iHeartMedia
IHRT
$532M
| $24K | ﹤0.01% |
3,300
-600
| -15% | -$5.19K |
|
7315
CALL
i3 Verticals
IIIV
$413M
| $24K | ﹤0.01% |
+1,200
| New | +$29.2K |
|
|
LGO
7316
Largo
LGO
$60.2M
| $24K | ﹤0.01% |
4,596
+4,258
| +1,260% | +$28.4K |
|
7317
CALL
Grand Canyon Education
LOPE
$3.85B
| $24K | ﹤0.01% |
300
-2,100
| -88% | -$182K |
|
|
MAPS
7318
PUT
DELISTED
WM TECHNOLOGY INC A
MAPS
| $24K | ﹤0.01% |
15,000
+4,400
| +42% | +$12.5K |
|
|
MCW
7319
PUT
DELISTED
Mister Car Wash
MCW
| $24K | ﹤0.01% |
2,900
-200
| -6% | -$2.15K |
|
|
NFGC
7320
CALL
New Found Gold
NFGC
$522M
| $24K | ﹤0.01% |
7,000
+6,400
| +1,067% | +$25K |
|
7321
NanoViricides
NNVC
$39M
| $24K | ﹤0.01% |
+14,129
| New | +$30.8K |
|
7322
CALL
Insight Enterprises
NSIT
$3.89B
| $24K | ﹤0.01% |
300
-900
| -75% | -$80K |
|
|
NVEE
7323
CALL
DELISTED
NV5 Global
NVEE
| $24K | ﹤0.01% |
800
| – | – |
|
7324
Oil States International
OIS
$486M
| $24K | ﹤0.01% |
6,367
+3,439
| +117% | +$16.4K |
|
|
PLYA
7325
PUT
DELISTED
Playa Hotels & Resorts
PLYA
| $24K | ﹤0.01% |
4,200
-4,500
| -52% | -$29.8K |
|
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.