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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
SIVB
526
CALL
DELISTED
SVB Financial Group
SIVB
| $21.5M | 0.02% |
93,500
+85,100
| +1,013% | +$21.1M |
|
527
CALL
Eaton
ETN
$158B
| $21.5M | 0.02% |
137,000
-39,800
| -23% | -$6.1M |
|
528
CALL
Lyft
LYFT
$5.57B
| $21.5M | 0.02% |
1,949,900
+606,500
| +45% | +$7.31M |
|
529
CALL
Becton Dickinson
BDX
$42.2B
| $21.5M | 0.02% |
87,000
+28,800
| +49% | +$6.8M |
|
530
PUT
New Oriental
EDU
$7.75B
| $21.5M | 0.02% |
616,900
+22,800
| +4% | +$644K |
|
531
PUT
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27B
| $21.4M | 0.02% |
48,400
-28,300
| -37% | -$12.5M |
|
532
CALL
HCA Healthcare
HCA
$82.5B
| $21.4M | 0.02% |
89,300
+17,000
| +24% | +$3.81M |
|
533
PUT
Plug Power
PLUG
$3.11B
| $21.4M | 0.02% |
1,726,900
-874,700
| -34% | -$13.9M |
|
534
PUT
Celsius Holdings
CELH
$7.28B
| $21.3M | 0.02% |
614,400
+264,900
| +76% | +$8.64M |
|
535
CALL
General Mills
GIS
$19.7B
| $21.3M | 0.02% |
254,000
-138,300
| -35% | -$11.3M |
|
536
CALL
US Bancorp Series B Preferred Stock
USB.PRH
$747M
| $21.2M | 0.02% |
486,600
+219,000
| +82% | +$4.1M |
|
537
PUT
Atlassian
TEAM
$21.7B
| $21.2M | 0.02% |
164,700
+66,100
| +67% | +$10.5M |
|
538
PUT
APA Corp
APA
$12.8B
| $21.1M | 0.02% |
452,800
-139,900
| -24% | -$6.26M |
|
539
CALL
Kinder Morgan
KMI
$72.3B
| $21.1M | 0.02% |
1,164,600
+431,800
| +59% | +$7.77M |
|
540
CALL
Elevance Health
ELV
$84.4B
| $21M | 0.02% |
40,900
+10,000
| +32% | +$5.08M |
|
541
Oracle
ORCL
$362B
| $20.9M | 0.02% |
255,931
+48,432
| +23% | +$3.68M |
|
|
542
CALL
APA Corp
APA
$12.8B
| $20.9M | 0.02% |
446,900
-470,400
| -51% | -$21M |
|
543
CALL
Teck Resources
TECK
$28B
| $20.8M | 0.02% |
549,000
-141,200
| -20% | -$4.89M |
|
|
B
544
Barrick Mining
B
$62.8B
| $20.7M | 0.02% |
1,205,407
-313,396
| -21% | -$4.99M |
|
545
PUT
Shell
SHEL
$243B
| $20.7M | 0.02% |
363,200
+11,300
| +3% | +$623K |
|
546
CALL
Teladoc Health
TDOC
$1.61B
| $20.7M | 0.02% |
873,700
+1,600
| +0.2% | +$43.1K |
|
547
PUT
Vertex Pharmaceuticals
VRTX
$120B
| $20.6M | 0.02% |
71,200
-24,800
| -26% | -$7.56M |
|
|
PXD
548
PUT
DELISTED
Pioneer Natural Resource Co.
PXD
| $20.5M | 0.02% |
89,700
-25,400
| -22% | -$6.18M |
|
|
FISV
549
CALL
Fiserv Inc
FISV
$26.8B
| $20.5M | 0.02% |
202,600
-60,100
| -23% | -$5.99M |
|
|
HES
550
PUT
DELISTED
Hess
HES
| $20.4M | 0.02% |
144,000
+22,200
| +18% | +$3.05M |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.