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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3326
CALL
SiteOne Landscape Supply
SITE
$4.55B
| $820K | ﹤0.01% |
4,700
+3,800
| +422% | +$627K |
|
3327
Alight
ALIT
$536M
| $819K | ﹤0.01% |
+4,160
| New | +$753K |
|
3328
PUT
Compass
COMP
$8.71B
| $817K | ﹤0.01% |
227,200
+223,500
| +6,041% | +$790K |
|
3329
CALL
Customers Bancorp
CUBI
$2.66B
| $817K | ﹤0.01% |
15,400
+2,700
| +21% | +$142K |
|
3330
Universal Display
OLED
$3.81B
| $817K | ﹤0.01% |
+4,856
| New | +$845K |
|
3331
iShares MSCI Global Min Vol Factor ETF
ACWV
$3.34B
| $816K | ﹤0.01% |
7,759
+4,831
| +165% | +$496K |
|
3332
CALL
Costamare
CMRE
$1.88B
| $816K | ﹤0.01% |
71,900
-109,400
| -60% | -$1.21M |
|
3333
PUT
Tencent Music
TME
$15.4B
| $816K | ﹤0.01% |
73,000
-66,300
| -48% | -$651K |
|
|
HDSN
3334
PUT
Hudson Technologies
HDSN
$259M
| $815K | ﹤0.01% |
74,100
+62,200
| +523% | +$810K |
|
3335
CALL
Calumet Specialty Products
CLMT
$3.67B
| $814K | ﹤0.01% |
54,800
-60,900
| -53% | -$970K |
|
3336
PUT
News Corp Class B
NWS
$17.3B
| $814K | ﹤0.01% |
31,100
-109,900
| -78% | -$2.9M |
|
|
PINC
3337
DELISTED
Premier
PINC
| $814K | ﹤0.01% |
36,856
+12,948
| +54% | +$280K |
|
3338
PUT
TD Synnex
SNX
$19.1B
| $814K | ﹤0.01% |
7,200
-25,100
| -78% | -$2.61M |
|
3339
PUT
Ameresco
AMRC
$988M
| $813K | ﹤0.01% |
33,700
+25,200
| +296% | +$565K |
|
3340
CALL
Corporacion America
CAAP
$4.28B
| $813K | ﹤0.01% |
48,400
+38,500
| +389% | +$597K |
|
|
DO
3341
DELISTED
Diamond Offshore Drilling, Inc.
DO
| $813K | ﹤0.01% |
59,628
-8,676
| -13% | -$107K |
|
3342
CALL
Inovio Pharmaceuticals
INO
$79.2M
| $811K | ﹤0.01% |
58,500
+46,050
| +370% | +$398K |
|
|
NKLA
3343
CALL
DELISTED
Nikola Corporation Common Stock
NKLA
| $811K | ﹤0.01% |
26,023
-44,357
| -63% | -$952K |
|
3344
PUT
Gartner
IT
$10.7B
| $810K | ﹤0.01% |
1,700
+700
| +70% | +$322K |
|
3345
CALL
Banco Macro
BMA
$5.71B
| $809K | ﹤0.01% |
16,800
+6,500
| +63% | +$230K |
|
3346
CALL
Hess Midstream
HESM
$5.17B
| $809K | ﹤0.01% |
22,400
-8,500
| -28% | -$287K |
|
3347
Immunovant
IMVT
$8.01B
| $807K | ﹤0.01% |
24,989
-52,493
| -68% | -$1.92M |
|
3348
PUT
Xponential Fitness
XPOF
$281M
| $807K | ﹤0.01% |
48,800
+45,200
| +1,256% | +$556K |
|
3349
Intrepid Potash
IPI
$468M
| $805K | ﹤0.01% |
38,600
+3,034
| +9% | +$60.5K |
|
3350
Universal Insurance Holdings
UVE
$1.22B
| $805K | ﹤0.01% |
+39,648
| New | +$714K |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.