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 | |
|---|---|---|---|---|---|---|
626
CALL
Waste Management
WM
$94.9B
| $16.8M | 0.02% |
107,400
+33,600
| +46% | +$5.41M |
|
627
CALL
Upstart Holdings
UPST
$2.74B
| $16.8M | 0.02% |
1,273,300
-114,400
| -8% | -$2.21M |
|
628
PUT
HP
HPQ
$23B
| $16.7M | 0.02% |
622,300
+2,800
| +0.5% | +$77.5K |
|
629
PUT
Welltower
WELL
$173B
| $16.6M | 0.02% |
253,200
+159,900
| +171% | +$10.3M |
|
630
CALL
BILL Holdings
BILL
$4.17B
| $16.6M | 0.02% |
151,900
+68,500
| +82% | +$8.22M |
|
631
PUT
Boston Scientific
BSX
$63.9B
| $16.5M | 0.02% |
357,000
+208,700
| +141% | +$9.04M |
|
|
HZNP
632
CALL
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $16.5M | 0.02% |
144,600
+40,200
| +39% | +$3.34M |
|
633
CALL
AMC Entertainment Holdings
AMC
$2.01B
| $16.4M | 0.02% |
569,060
+249,320
| +78% | +$15.7M |
|
634
CALL
Chubb
CB
$133B
| $16.2M | 0.02% |
73,500
+25,900
| +54% | +$5.39M |
|
635
CALL
Warner Bros
WBD
$64.8B
| $16.1M | 0.02% |
1,695,900
+339,600
| +25% | +$3.83M |
|
636
PUT
Suncor Energy
SU
$76.4B
| $16M | 0.02% |
505,500
+1,100
| +0.2% | +$36.2K |
|
637
CALL
Lucid Motors
LCID
$2.65B
| $16M | 0.02% |
234,670
+12,460
| +6% | +$1.37M |
|
|
RXDX
638
CALL
DELISTED
Prometheus Biosciences, Inc. Common Stock
RXDX
| $15.9M | 0.02% |
145,000
+87,300
| +151% | +$5.66M |
|
639
PUT
Invesco CurrencyShares Euro Currency Trust
FXE
$332M
| $15.9M | 0.02% |
160,900
-149,500
| -48% | -$14.1M |
|
640
PUT
DoorDash
DASH
$77.4B
| $15.9M | 0.02% |
325,300
-276,300
| -46% | -$14.3M |
|
|
PXD
641
CALL
DELISTED
Pioneer Natural Resource Co.
PXD
| $15.9M | 0.02% |
69,500
-67,200
| -49% | -$16.4M |
|
642
PUT
Peloton Interactive
PTON
$2.71B
| $15.8M | 0.02% |
1,995,700
+792,000
| +66% | +$7.6M |
|
643
CALL
Campbell Soup
CPB
$6.52B
| $15.8M | 0.02% |
279,200
+189,900
| +213% | +$9.96M |
|
644
iShares 20+ Year Treasury Bond ETF
TLT
$42.2B
| $15.8M | 0.02% |
159,121
-427,186
| -73% | -$43M |
|
|
SCIU
645
CALL
DELISTED
Global X Scientific Beta US ETF
SCIU
| $15.8M | 0.02% |
574,000
-117,300
| -17% | -$3.24M |
|
646
CALL
American Electric Power
AEP
$72.4B
| $15.8M | 0.02% |
166,500
+71,300
| +75% | +$6.49M |
|
647
CALL
Dropbox
DBX
$6.69B
| $15.8M | 0.02% |
706,000
+265,400
| +60% | +$5.84M |
|
648
CALL
Fortinet
FTNT
$114B
| $15.8M | 0.02% |
322,800
+174,400
| +118% | +$9.09M |
|
649
CALL
Match Group
MTCH
$8.87B
| $15.8M | 0.02% |
380,000
+95,000
| +33% | +$4.3M |
|
650
PUT
US Foods
USFD
$21.2B
| $15.7M | 0.02% |
461,500
+450,800
| +4,213% | +$14.4M |
|
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.