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 | |
|---|---|---|---|---|---|---|
2626
CALL
Crane NXT
CXT
$3.04B
| $853K | ﹤0.01% |
24,472
+14,683
| +150% | +$512K |
|
2627
PUT
Establishment Labs
ESTA
$2.72B
| $853K | ﹤0.01% |
13,000
+10,100
| +348% | +$610K |
|
2628
CALL
Concentrix
CNXC
$1.36B
| $852K | ﹤0.01% |
6,400
-19,400
| -75% | -$2.36M |
|
2629
CALL
Atkore
ATKR
$2.59B
| $850K | ﹤0.01% |
7,500
-3,700
| -33% | -$387K |
|
2630
CALL
Delek US
DK
$3.87B
| $850K | ﹤0.01% |
31,500
-44,300
| -58% | -$1.31M |
|
2631
PUT
Antero Midstream
AM
$10.8B
| $849K | ﹤0.01% |
78,700
+4,400
| +6% | +$46.7K |
|
2632
CALL
Graphic Packaging
GPK
$3.26B
| $849K | ﹤0.01% |
38,200
+34,000
| +810% | +$748K |
|
2633
LivaNova
LIVN
$4.3B
| $849K | ﹤0.01% |
+15,303
| New | +$782K |
|
2634
CALL
Manulife Financial
MFC
$72.6B
| $849K | ﹤0.01% |
47,600
-131,900
| -73% | -$2.25M |
|
2635
CALL
Red Rock Resorts
RRR
$3.74B
| $848K | ﹤0.01% |
21,200
+4,100
| +24% | +$168K |
|
2636
Galicia Financial Group
GGAL
$7.92B
| $847K | ﹤0.01% |
87,106
+23,971
| +38% | +$189K |
|
2637
CALL
AllianceBernstein
AB
$3.47B
| $845K | ﹤0.01% |
24,600
+14,200
| +137% | +$526K |
|
2638
CALL
Sibanye-Stillwater
SBSW
$5.92B
| $845K | ﹤0.01% |
79,300
-7,000
| -8% | -$71.1K |
|
2639
CALL
Vanguard ESG US Corporate Bond ETF
VCEB
$1.18B
| $845K | ﹤0.01% |
8,700
-7,200
| -45% | -$434K |
|
2640
CALL
Azenta
AZTA
$1.26B
| $844K | ﹤0.01% |
14,500
+13,400
| +1,218% | +$686K |
|
2641
PUT
Cars.com
CARS
$641M
| $844K | ﹤0.01% |
61,300
+1,300
| +2% | +$17.6K |
|
2642
PUT
2x Long VIX Futures ETF
UVIX
$286M
| $844K | ﹤0.01% |
6
-3
| -33% | -$274K |
|
2643
Xerox
XRX
$337M
| $843K | ﹤0.01% |
+57,744
| New | +$871K |
|
|
RVNC
2644
PUT
DELISTED
Revance Therapeutics, Inc.
RVNC
| $841K | ﹤0.01% |
45,600
-22,500
| -33% | -$515K |
|
2645
Kyndryl
KD
$2.66B
| $839K | ﹤0.01% |
75,453
-135,587
| -64% | -$1.36M |
|
2646
CALL
PagerDuty
PD
$700M
| $839K | ﹤0.01% |
31,600
-500
| -2% | -$11.8K |
|
2647
PUT
Procept Biorobotics
PRCT
$950M
| $839K | ﹤0.01% |
20,200
+16,500
| +446% | +$709K |
|
|
RVNC
2648
CALL
DELISTED
Revance Therapeutics, Inc.
RVNC
| $839K | ﹤0.01% |
45,500
-39,900
| -47% | -$913K |
|
2649
CALL
Chefs' Warehouse
CHEF
$3.87B
| $835K | ﹤0.01% |
25,100
-10,000
| -28% | -$348K |
|
2650
PUT
Viking Therapeutics
VKTX
$4.04B
| $834K | ﹤0.01% |
88,800
+87,100
| +5,124% | +$389K |
|
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.