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 | |
|---|---|---|---|---|---|---|
301
PUT
Pinduoduo
PDD
$118B
| $41M | 0.05% |
655,200
+229,800
| +54% | +$13.4M |
|
302
iShares China Large-Cap ETF
FXI
$4.29B
| $40.9M | 0.05% |
1,581,551
+267,698
| +20% | +$8.02M |
|
303
CALL
Gilead Sciences
GILD
$163B
| $40.8M | 0.05% |
662,100
+116,800
| +21% | +$7.37M |
|
304
PUT
Cheniere Energy
LNG
$55.4B
| $40.8M | 0.05% |
246,000
+156,800
| +176% | +$23.8M |
|
305
CALL
EPAM Systems
EPAM
$4.54B
| $40.7M | 0.05% |
112,500
+75,000
| +200% | +$28.7M |
|
306
PUT
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$253M
| $40.6M | 0.05% |
3,564,400
-900,400
| -20% | -$33.2M |
|
307
PUT
3M
MMM
$89.4B
| $40.5M | 0.05% |
438,812
+145,792
| +50% | +$16M |
|
308
CALL
Applied Materials
AMAT
$443B
| $40.5M | 0.05% |
494,500
+87,900
| +22% | +$8.48M |
|
309
CALL
American Express
AXP
$238B
| $39.9M | 0.05% |
295,600
+41,000
| +16% | +$6.21M |
|
310
PUT
NIO
NIO
$11.7B
| $39.7M | 0.04% |
2,518,000
-446,100
| -15% | -$8.83M |
|
|
311
CALL
NIO
NIO
$11.7B
| $39.6M | 0.04% |
2,508,300
+178,300
| +8% | +$3.53M |
|
312
PUT
Devon Energy
DVN
$51.6B
| $39.5M | 0.04% |
656,500
-54,900
| -8% | -$3.41M |
|
313
CALL
American Airlines Group
AAL
$10.1B
| $39.5M | 0.04% |
3,277,700
+146,900
| +5% | +$2.05M |
|
314
PUT
Analog Devices
ADI
$188B
| $39.4M | 0.04% |
283,000
+214,500
| +313% | +$33.9M |
|
315
CALL
Trade Desk
TTD
$8.39B
| $39.2M | 0.04% |
656,600
-167,300
| -20% | -$9.52M |
|
316
PUT
Lennar Class A
LEN
$19.7B
| $39.2M | 0.04% |
542,842
+263,622
| +94% | +$20.5M |
|
317
CALL
CVS Health
CVS
$140B
| $39.2M | 0.04% |
410,600
+22,900
| +6% | +$2.27M |
|
318
PUT
Regeneron Pharmaceuticals
REGN
$69.1B
| $39.1M | 0.04% |
56,700
-15,900
| -22% | -$10M |
|
319
PUT
Marvell Technology
MRVL
$191B
| $38.6M | 0.04% |
900,300
+50,600
| +6% | +$2.51M |
|
320
PUT
Pinterest
PINS
$12.7B
| $38.6M | 0.04% |
1,656,900
+340,700
| +26% | +$7.47M |
|
321
CALL
RTX Corp
RTX
$263B
| $37.6M | 0.04% |
459,100
-235,700
| -34% | -$21.3M |
|
|
322
Pfizer
PFE
$142B
| $37.4M | 0.04% |
+855,584
| New | +$41.6M |
|
323
CALL
Las Vegas Sands
LVS
$30.5B
| $37.2M | 0.04% |
990,700
-577,700
| -37% | -$21.5M |
|
324
PUT
Intuitive Surgical
ISRG
$121B
| $37.1M | 0.04% |
198,100
+78,000
| +65% | +$16.8M |
|
325
PUT
EQT Corp
EQT
$33.2B
| $36.5M | 0.04% |
894,800
+400,300
| +81% | +$17.4M |
|
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.