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 | |
|---|---|---|---|---|---|---|
|
NSTG
1526
PUT
DELISTED
NanoString Technologies, Inc.
NSTG
| $3.27M | ﹤0.01% |
256,300
+106,100
| +71% | +$1.47M |
|
|
NVRO
1527
CALL
DELISTED
NEVRO CORP.
NVRO
| $3.27M | ﹤0.01% |
70,200
-8,200
| -10% | -$381K |
|
1528
CALL
Public Service Enterprise Group
PEG
$39.8B
| $3.27M | ﹤0.01% |
58,100
+14,100
| +32% | +$908K |
|
1529
CALL
United Therapeutics
UTHR
$26.3B
| $3.27M | ﹤0.01% |
15,600
+12,100
| +346% | +$2.71M |
|
1530
PUT
Danaos Corp
DAC
$2.55B
| $3.26M | ﹤0.01% |
58,600
+5,300
| +10% | +$352K |
|
1531
PUT
Caesarstone
CSTE
$72.3M
| $3.26M | ﹤0.01% |
350,100
+40,400
| +13% | +$389K |
|
1532
CALL
Lantheus
LNTH
$6.82B
| $3.26M | ﹤0.01% |
46,300
+3,000
| +7% | +$227K |
|
1533
PUT
Mettler-Toledo International
MTD
$26.8B
| $3.25M | ﹤0.01% |
3,000
+2,700
| +900% | +$3.36M |
|
|
VTLE
1534
CALL
DELISTED
Vital Energy
VTLE
| $3.24M | ﹤0.01% |
51,600
+10,100
| +24% | +$719K |
|
1535
PUT
J.M. Smucker
SJM
$12.6B
| $3.24M | ﹤0.01% |
23,600
-4,500
| -16% | -$613K |
|
1536
Pan American Silver
PAAS
$18.6B
| $3.24M | ﹤0.01% |
203,998
+80,315
| +65% | +$1.4M |
|
1537
CALL
United Microelectronic
UMC
$48.9B
| $3.23M | ﹤0.01% |
580,500
+380,700
| +191% | +$2.51M |
|
1538
Hershey
HSY
$35.4B
| $3.23M | ﹤0.01% |
14,649
+8,362
| +133% | +$1.87M |
|
|
DM
1539
PUT
DELISTED
Desktop Metal, Inc.
DM
| $3.23M | ﹤0.01% |
124,650
+5,360
| +4% | +$150K |
|
1540
PUT
Synaptics
SYNA
$4.41B
| $3.23M | ﹤0.01% |
32,600
+15,700
| +93% | +$1.95M |
|
1541
CALL
Teradyne
TER
$54.8B
| $3.22M | ﹤0.01% |
42,800
-22,000
| -34% | -$2.01M |
|
1542
PUT
Bumble
BMBL
$367M
| $3.2M | ﹤0.01% |
149,100
+10,400
| +7% | +$307K |
|
1543
CALL
Smith & Nephew
SNN
$12.9B
| $3.2M | ﹤0.01% |
138,000
+135,600
| +5,650% | +$3.48M |
|
1544
CALL
Lincoln National
LNC
$7.91B
| $3.2M | ﹤0.01% |
72,900
+29,600
| +68% | +$1.43M |
|
1545
CALL
Trane Technologies
TT
$106B
| $3.2M | ﹤0.01% |
22,100
+21,400
| +3,057% | +$3.2M |
|
1546
CALL
Sunoco
SUN
$14.2B
| $3.2M | ﹤0.01% |
82,100
+60,400
| +278% | +$2.38M |
|
|
TE
1547
CALL
T1 Energy
TE
$1.4B
| $3.2M | ﹤0.01% |
224,600
-61,000
| -21% | -$682K |
|
1548
Crown Holdings
CCK
$12.8B
| $3.2M | ﹤0.01% |
39,455
+18,692
| +90% | +$1.74M |
|
1549
PUT
Vistra
VST
$55.1B
| $3.2M | ﹤0.01% |
152,200
-23,000
| -13% | -$557K |
|
1550
CALL
Agilon Health
AGL
$1.64B
| $3.19M | ﹤0.01% |
5,456
+4,676
| +599% | +$2.8M |
|
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.