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 | Miscellaneous | 98.19% |
| 2 | Consumer Discretionary | 0.38% |
| 3 | Technology | 0.35% |
| 4 | Communication Services | 0.24% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
576
PUT
Futu Holdings
FUTU
$17.1B
| $19M | 0.02% |
467,800
+307,700
| +192% | +$15M |
|
577
CALL
D.R. Horton
DHI
$39.9B
| $19M | 0.02% |
213,200
+88,700
| +71% | +$7.11M |
|
578
PUT
Expedia Group
EXPE
$35.8B
| $19M | 0.02% |
216,600
-35,400
| -14% | -$3.35M |
|
579
CALL
Cameco
CCJ
$43.9B
| $18.9M | 0.02% |
833,800
-345,300
| -29% | -$8.12M |
|
580
PUT
CarMax
KMX
$8.98B
| $18.9M | 0.02% |
309,800
+130,500
| +73% | +$8.38M |
|
581
PUT
W.W. Grainger
GWW
$62.4B
| $18.9M | 0.02% |
33,900
+2,900
| +9% | +$1.64M |
|
582
PUT
Nutrien
NTR
$37.9B
| $18.8M | 0.02% |
258,000
+114,300
| +80% | +$9.03M |
|
583
CALL
DuPont de Nemours
DD
$17.8B
| $18.8M | 0.02% |
218,526
+15,535
| +8% | +$1.24M |
|
584
CALL
Atlassian
TEAM
$48B
| $18.8M | 0.02% |
146,200
+38,100
| +35% | +$6.07M |
|
585
CALL
Prologis
PLD
$131B
| $18.7M | 0.02% |
166,200
-63,800
| -28% | -$7.07M |
|
586
CALL
Hilton Worldwide
HLT
$70B
| $18.7M | 0.02% |
148,200
+6,400
| +5% | +$843K |
|
587
PUT
Campbell Soup
CPB
$6.38B
| $18.6M | 0.02% |
327,700
+263,300
| +409% | +$13.8M |
|
588
PUT
Ovintiv
OVV
$17.9B
| $18.6M | 0.02% |
365,900
+182,500
| +100% | +$9.54M |
|
589
PUT
Advance Auto Parts
AAP
$2.67B
| $18.5M | 0.02% |
126,100
+56,900
| +82% | +$9.22M |
|
590
PUT
Warner Bros
WBD
$70.8B
| $18.5M | 0.02% |
1,953,600
-385,000
| -16% | -$4.35M |
|
591
CALL
GSK
GSK
$100B
| $18.4M | 0.02% |
599,200
-49,800
| -8% | -$1.66M |
|
592
CALL
Sherwin-Williams
SHW
$81B
| $18.4M | 0.02% |
77,400
+38,700
| +100% | +$8.95M |
|
593
CALL
Prudential Financial
PRU
$42.1B
| $18.3M | 0.02% |
183,700
+75,000
| +69% | +$7.6M |
|
|
COUP
594
CALL
DELISTED
Coupa Software Incorporated
COUP
| $18.3M | 0.02% |
230,600
+148,700
| +182% | +$8.9M |
|
595
PUT
Western Digital
WDC
$169B
| $18.2M | 0.02% |
765,223
+296,749
| +63% | +$7.83M |
|
596
CALL
Valero Energy
VLO
$107B
| $18.2M | 0.02% |
143,800
-71,400
| -33% | -$8.96M |
|
597
PUT
Becton Dickinson
BDX
$50.3B
| $18.2M | 0.02% |
95,500
+9,900
| +12% | +$2.34M |
|
598
CALL
Peloton Interactive
PTON
$2.37B
| $18.2M | 0.02% |
2,286,100
+339,900
| +17% | +$3.26M |
|
599
CALL
Bank of Montreal
BMO
$122B
| $18.1M | 0.02% |
199,800
-39,500
| -17% | -$3.66M |
|
600
PUT
BioNTech
BNTX
$26.1B
| $18.1M | 0.02% |
120,500
+30,900
| +34% | +$4.76M |
|
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, 3,363 increased, 4,368 reduced and 1,941 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 Miscellaneous at 98% of assets, up from 98% a quarter earlier, followed by Consumer Discretionary and Technology.
- 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 1,941 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.