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
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3626
Delek Logistics
DKL
$3.21B
| $360K | ﹤0.01% |
+7,243
| New | +$373K |
|
3627
iShares Copper and Metals Mining ETF
ICOP
$430M
| $360K | ﹤0.01% |
7,574
+3,750
| +98% | +$189K |
|
|
HAPN
3628
CALL
Happen Inc
HAPN
$2.21B
| $359K | ﹤0.01% |
25,100
-184,100
| -88% | -$3.08M |
|
3629
CALL
HealthEquity
HQY
$8.41B
| $359K | ﹤0.01% |
4,300
-1,600
| -27% | -$131K |
|
3630
Teucrium Corn Fund
CORN
$176M
| $359K | ﹤0.01% |
+19,525
| New | +$348K |
|
3631
CALL
Solventum
SOLV
$14.8B
| $359K | ﹤0.01% |
5,500
+3,300
| +150% | +$245K |
|
3632
PUT
Ardelyx
ARDX
$1.22B
| $359K | ﹤0.01% |
59,900
+39,600
| +195% | +$262K |
|
3633
PUT
Clover Health Investments
CLOV
$2.2B
| $358K | ﹤0.01% |
+203,600
| New | +$442K |
|
3634
CALL
Robert Half
RHI
$3.87B
| $358K | ﹤0.01% |
14,100
+12,900
| +1,075% | +$341K |
|
3635
PUT
Hess Midstream
HESM
$5.24B
| $358K | ﹤0.01% |
9,200
| – | – |
|
3636
PUT
Waters Corp
WAT
$37B
| $357K | ﹤0.01% |
1,200
-400
| -25% | -$137K |
|
|
RC
3637
CALL
Ready Capital
RC
$258M
| $357K | ﹤0.01% |
220,500
+35,400
| +19% | +$67.8K |
|
3638
B2Gold
BTG
$5B
| $357K | ﹤0.01% |
78,723
-782,349
| -91% | -$3.93M |
|
3639
CoreCivic
CXW
$2.96B
| $357K | ﹤0.01% |
18,858
-52,464
| -74% | -$989K |
|
3640
CALL
Lands' End
LE
$370M
| $356K | ﹤0.01% |
+31,700
| New | +$501K |
|
3641
PUT
Hasbro
HAS
$13.3B
| $356K | ﹤0.01% |
3,800
-28,200
| -88% | -$2.63M |
|
|
BORR
3642
CALL
Borr Drilling
BORR
$1.24B
| $355K | ﹤0.01% |
61,600
-170,800
| -73% | -$875K |
|
3643
CALL
MACOM Technology Solutions
MTSI
$19.2B
| $355K | ﹤0.01% |
+1,600
| New | +$357K |
|
3644
PUT
Agios Pharmaceuticals
AGIO
$1.79B
| $355K | ﹤0.01% |
10,500
-35,900
| -77% | -$1.02M |
|
3645
NCR Voyix
VYX
$1.14B
| $355K | ﹤0.01% |
56,082
+51,336
| +1,082% | +$453K |
|
3646
CALL
Immunome
IMNM
$2.58B
| $354K | ﹤0.01% |
16,200
-40,300
| -71% | -$897K |
|
3647
OraSure Technologies
OSUR
$279M
| $354K | ﹤0.01% |
118,051
+115,658
| +4,833% | +$329K |
|
3648
PUT
Pinnacle West Capital
PNW
$12.2B
| $353K | ﹤0.01% |
+3,500
| New | +$338K |
|
|
BDN
3649
PUT
Brandywine Realty Trust
BDN
$524M
| $353K | ﹤0.01% |
130,100
+5,400
| +4% | +$16.2K |
|
3650
PUT
Tyson Foods
TSN
$20.4B
| $352K | ﹤0.01% |
5,500
-7,500
| -58% | -$466K |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.