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 |
Alibaba
BABA
|
+$120M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$93.9M |
| 3 |
Walt Disney
DIS
|
+$71.7M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.7M |
| 5 |
Citigroup
C
|
+$39.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$136M |
| 2 |
Amazon
AMZN
|
+$118M |
| 3 |
SPDR Gold Trust
GLD
|
+$56.2M |
| 4 |
Microsoft
MSFT
|
+$52.4M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$45.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.33% |
| 2 | Consumer Discretionary | 0.3% |
| 3 | Communication Services | 0.21% |
| 4 | Financials | 0.19% |
| 5 | Healthcare | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4551
CALL
NCR Voyix
VYX
$1.19B
| $225K | ﹤0.01% |
22,100
-8,381
| -27% | -$134K |
|
4552
CALL
Ambev
ABEV
$47.9B
| $224K | ﹤0.01% |
80,300
-14,900
| -16% | -$40.2K |
|
4553
PUT
BBVA Argentina
BBAR
$3.85B
| $224K | ﹤0.01% |
41,300
-33,500
| -45% | -$158K |
|
4554
CALL
Evergy
EVRG
$19.4B
| $224K | ﹤0.01% |
4,300
-4,700
| -52% | -$237K |
|
4555
CGI
GIB
$15.6B
| $224K | ﹤0.01% |
2,097
+1,487
| +244% | +$151K |
|
4556
CALL
Goldman Sachs BDC
GSBD
$997M
| $224K | ﹤0.01% |
15,300
+15,200
| +15,200% | +$220K |
|
4557
Monro
MNRO
$414M
| $224K | ﹤0.01% |
+7,667
| New | +$216K |
|
4558
Opko Health
OPK
$1.02B
| $224K | ﹤0.01% |
+148,360
| New | +$214K |
|
4559
PUT
Ultragenyx Pharmaceutical
RARE
$2.46B
| $224K | ﹤0.01% |
4,700
-5,600
| -54% | -$217K |
|
4560
PUT
Teleflex
TFX
$5.96B
| $224K | ﹤0.01% |
900
+800
| +800% | +$171K |
|
|
VRNA
4561
CALL
DELISTED
Verona Pharma
VRNA
| $224K | ﹤0.01% |
11,300
+5,800
| +105% | +$85.6K |
|
4562
PUT
Beam Therapeutics
BEAM
$2.68B
| $223K | ﹤0.01% |
8,200
-33,100
| -80% | -$822K |
|
4563
MarketAxess Holdings
MKTX
$4.47B
| $223K | ﹤0.01% |
764
-1,708
| -69% | -$413K |
|
4564
PUT
Simplify US Equity PLUS Convexity ETF
SPYC
$109M
| $223K | ﹤0.01% |
8,800
+2,600
| +42% | +$75.1K |
|
|
NVEI
4565
PUT
DELISTED
Nuvei Corporation Subordinate Voting Shares
NVEI
| $223K | ﹤0.01% |
8,500
-3,700
| -30% | -$71K |
|
4566
CALL
Brown-Forman Class B
BF.B
$13.5B
| $222K | ﹤0.01% |
3,900
+3,800
| +3,800% | +$218K |
|
4567
CALL
Globus Maritime Ltd
GLBS
$61.5M
| $222K | ﹤0.01% |
83,800
+24,700
| +42% | +$52.8K |
|
4568
CALL
Highwoods Properties
HIW
$3.79B
| $222K | ﹤0.01% |
9,700
-6,100
| -39% | -$121K |
|
|
MOMO
4569
PUT
Hello Group
MOMO
$867M
| $221K | ﹤0.01% |
31,800
-6,500
| -17% | -$45.2K |
|
4570
NerdWallet
NRDS
$632M
| $221K | ﹤0.01% |
15,070
+13,829
| +1,114% | +$152K |
|
4571
CALL
Quest Resource Holding
QRHC
$27.6M
| $221K | ﹤0.01% |
30,200
+1,100
| +4% | +$7.89K |
|
4572
PUT
Vital Farms
VITL
$586M
| $221K | ﹤0.01% |
14,100
-11,400
| -45% | -$144K |
|
|
BASE
4573
CALL
DELISTED
Couchbase
BASE
| $220K | ﹤0.01% |
9,800
+2,100
| +27% | +$38.5K |
|
4574
CALL
Consolidated Water Co
CWCO
$472M
| $220K | ﹤0.01% |
6,200
+500
| +9% | +$16.5K |
|
4575
CALL
Forward Air
FWRD
$461M
| $220K | ﹤0.01% |
3,500
+800
| +30% | +$53.9K |
|
Similar funds
Simplex Trading's Q4 2023 Portfolio in Review
As of Q4 2023, Simplex Trading held 10,333 positions worth $156B, up 23% from $127B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading deployed $15.1B of net new capital in Q4 2023, opening 1,639 new positions and adding to 3,920 existing holdings. Its largest new stake was Walt Disney: 812,984 shares worth $73.4M.
By sector, the portfolio is most concentrated in Technology at 0.33% of assets, down from 0.44% a quarter earlier, followed by Consumer Discretionary and Communication Services.
On the sell side, the largest reduction was iShares 20+ Year Treasury Bond ETF, an estimated $136M trimmed.
- Simplex Trading's largest Q4 2023 buy was Walt Disney: 812,984 shares worth $73.4M.
- Simplex Trading added most to Alibaba in Q4 2023, an estimated $120M increase.
- Simplex Trading's biggest Q4 2023 reduction was iShares 20+ Year Treasury Bond ETF, cutting an estimated $136M.
- Simplex Trading fully exited Amazon in Q4 2023, selling an estimated $118M.
- Simplex Trading's ten largest holdings make up 42% of its $156B portfolio in Q4 2023.
- Simplex Trading opened 1,639 new positions and closed 1,508 in Q4 2023.
- Simplex Trading's portfolio value rose 23% quarter-over-quarter to $156B.
Based on Simplex Trading's 13F filing for Q4 2023, filed 2 Feb 2024.