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 | |
|---|---|---|---|---|---|---|
276
CALL
Snap
SNAP
$7.6B
| $43.8M | 0.05% |
4,460,000
+2,021,600
| +83% | +$23.5M |
|
277
PUT
Cigna
CI
$76.7B
| $43.2M | 0.05% |
155,700
+61,700
| +66% | +$17.4M |
|
278
CALL
Generac Holdings
GNRC
$12.7B
| $43.2M | 0.05% |
242,500
+201,000
| +484% | +$46.1M |
|
279
CALL
Moderna
MRNA
$23.2B
| $43.2M | 0.05% |
365,000
-187,300
| -34% | -$28.4M |
|
280
PUT
Zscaler
ZS
$23.2B
| $43.1M | 0.05% |
262,300
-86,000
| -25% | -$14.1M |
|
281
PUT
Workday
WDAY
$33.3B
| $43.1M | 0.05% |
282,900
+31,000
| +12% | +$4.85M |
|
282
CALL
VanEck Durable High Dividend ETF
DURA
$38.4M
| $43M | 0.05% |
218,800
-27,100
| -11% | -$820K |
|
283
PUT
Strategy Inc
MSTR
$36.1B
| $42.8M | 0.05% |
2,018,000
+463,000
| +30% | +$11.6M |
|
|
SCHW
284
CALL
Charles Schwab
SCHW
$174B
| $42.8M | 0.05% |
595,800
+221,000
| +59% | +$15.3M |
|
285
PUT
Oracle
ORCL
$362B
| $42.7M | 0.05% |
700,000
+58,100
| +9% | +$4.25M |
|
286
Invesco QQQ Trust
QQQ
$471B
| $42.6M | 0.05% |
159,553
-89,971
| -36% | -$27.2M |
|
287
PUT
Albemarle
ALB
$14B
| $42.6M | 0.05% |
161,000
+99,300
| +161% | +$25.3M |
|
288
PUT
CVS Health
CVS
$140B
| $42.6M | 0.05% |
446,400
+28,400
| +7% | +$2.81M |
|
289
CALL
Energy Transfer Partners
ET
$70.1B
| $42.6M | 0.05% |
3,858,300
+1,024,900
| +36% | +$11.4M |
|
290
CALL
ProShares Ultra Bloomberg Natural Gas
BOIL
$415M
| $42.3M | 0.05% |
12,270
+1,829
| +18% | +$29.2M |
|
|
UWC
291
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $42.3M | 0.05% |
1,985,600
-537,000
| -21% | -$11.4M |
|
292
PUT
Valero Energy
VLO
$92.8B
| $42.2M | 0.05% |
394,900
+53,600
| +16% | +$5.9M |
|
|
SHNY
293
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $42.1M | 0.05% |
1,383,400
+571,000
| +70% | +$17.4M |
|
294
CALL
GameStop
GME
$9.76B
| $41.8M | 0.05% |
1,665,200
-786,800
| -32% | -$25.7M |
|
295
PUT
United Airlines
UAL
$38.3B
| $41.6M | 0.05% |
1,279,400
-611,900
| -32% | -$22.8M |
|
296
PUT
ProShares UltraShort Health Care
RXD
$3.35M
| $41.6M | 0.05% |
681,200
+108,350
| +19% | +$2.92M |
|
|
B
297
PUT
Barrick Mining
B
$62.8B
| $41.5M | 0.05% |
2,676,400
+1,555,000
| +139% | +$24.5M |
|
298
CALL
Marvell Technology
MRVL
$191B
| $41.4M | 0.05% |
964,200
-371,500
| -28% | -$18.4M |
|
299
CALL
Zoom
ZM
$25.3B
| $41.1M | 0.05% |
558,200
+66,800
| +14% | +$6.36M |
|
300
CALL
Rio Tinto
RIO
$150B
| $41M | 0.05% |
775,000
+403,500
| +109% | +$23.2M |
|
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.