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 |
AMC Entertainment Holdings
AMC
|
+$39.3M |
| 2 |
AT&T
T
|
+$29.8M |
| 3 |
NVIDIA
NVDA
|
+$28.3M |
| 4 |
Micron Technology
MU
|
+$22.9M |
| 5 |
Baidu
BIDU
|
+$22.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$36.1M |
| 2 |
Tesla
TSLA
|
+$35.2M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.9M |
| 4 |
Palantir
PLTR
|
+$25.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.47% |
| 2 | Consumer Discretionary | 0.39% |
| 3 | Communication Services | 0.27% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.25% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CHNG
3376
DELISTED
Change Healthcare Inc. Common Stock
CHNG
| $842K | ﹤0.01% |
36,565
+19,478
| +114% | +$448K |
|
3377
Elanco Animal Health
ELAN
$12.7B
| $841K | ﹤0.01% |
24,247
+12,575
| +108% | +$415K |
|
|
SAND
3378
PUT
DELISTED
Sandstorm Gold
SAND
| $841K | ﹤0.01% |
106,600
+105,628
| +10,867% | +$855K |
|
3379
D.R. Horton
DHI
$41.3B
| $840K | ﹤0.01% |
+9,296
| New | +$873K |
|
3380
Mattel
MAT
$4.3B
| $840K | ﹤0.01% |
41,827
+11,291
| +37% | +$233K |
|
3381
CALL
Ouster
OUST
$2.36B
| $840K | ﹤0.01% |
6,730
+6,331
| +1,587% | +$675K |
|
|
AZUL
3382
CALL
DELISTED
Azul
AZUL
| $839K | ﹤0.01% |
31,800
+31,166
| +4,916% | +$744K |
|
3383
PUT
Ryder
R
$10.3B
| $839K | ﹤0.01% |
11,300
+11,251
| +22,961% | +$890K |
|
3384
BioCryst Pharmaceuticals
BCRX
$2.43B
| $838K | ﹤0.01% |
53,009
+13,138
| +33% | +$179K |
|
|
VTNR
3385
DELISTED
Vertex Energy, Inc
VTNR
| $838K | ﹤0.01% |
63,355
+35,020
| +124% | +$145K |
|
3386
Hain Celestial
HAIN
$46M
| $837K | ﹤0.01% |
+20,869
| New | +$861K |
|
3387
PUT
Ryman Hospitality Properties
RHP
$8.52B
| $836K | ﹤0.01% |
10,600
+10,575
| +42,300% | +$819K |
|
3388
CALL
Viking Therapeutics
VKTX
$4.05B
| $836K | ﹤0.01% |
139,700
+137,778
| +7,168% | +$818K |
|
3389
CALL
Bloomin' Brands
BLMN
$731M
| $835K | ﹤0.01% |
30,800
+30,502
| +10,236% | +$863K |
|
|
OPLN
3390
CALL
Openlane
OPLN
$4.25B
| $835K | ﹤0.01% |
+47,600
| New | +$806K |
|
3391
PUT
Vanguard Short-Term Treasury ETF
VGSH
$29.3B
| $835K | ﹤0.01% |
9,500
+9,283
| +4,278% | +$571K |
|
|
SWN
3392
DELISTED
Southwestern Energy Company
SWN
| $835K | ﹤0.01% |
147,415
+107,755
| +272% | +$530K |
|
3393
CALL
Ameresco
AMRC
$1.12B
| $834K | ﹤0.01% |
13,300
+12,916
| +3,364% | +$695K |
|
3394
VF Corp
VFC
$6.72B
| $834K | ﹤0.01% |
10,167
-29,602
| -74% | -$2.47M |
|
|
AVTA
3395
CALL
DELISTED
Avantax, Inc. Common Stock
AVTA
| $834K | ﹤0.01% |
48,200
+47,701
| +9,559% | +$783K |
|
|
CHX
3396
CALL
DELISTED
ChampionX
CHX
| $833K | ﹤0.01% |
32,500
+32,481
| +170,953% | +$791K |
|
3397
CALL
Telos
TLS
$346M
| $833K | ﹤0.01% |
24,500
+24,284
| +11,243% | +$818K |
|
3398
CALL
Upbound Group
UPBD
$1.2B
| $833K | ﹤0.01% |
15,700
+15,508
| +8,077% | +$901K |
|
|
RAD
3399
DELISTED
Rite Aid Corporation
RAD
| $833K | ﹤0.01% |
51,156
+32,687
| +177% | +$626K |
|
3400
Calumet Specialty Products
CLMT
$3.6B
| $832K | ﹤0.01% |
121,211
+31,372
| +35% | +$193K |
|
Similar funds
Simplex Trading's Q2 2021 Portfolio in Review
As of Q2 2021, Simplex Trading held 11,184 positions worth $104B, up 86% from $55.7B the previous quarter. Its ten largest holdings account for 40% of the portfolio.
Simplex Trading deployed $97.5B of net new capital in Q2 2021, opening 2,250 new positions and adding to 6,673 existing holdings. Its largest new stake was AT&T: 1,311,180 shares worth $28.5M.
By sector, the portfolio is most concentrated in Technology at 0.47% of assets, down from 0.65% a quarter earlier, followed by Consumer Discretionary and Communication Services.
On the sell side, the largest reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, an estimated $25.9M trimmed.
- Simplex Trading's largest Q2 2021 buy was AT&T: 1,311,180 shares worth $28.5M.
- Simplex Trading added most to AMC Entertainment Holdings in Q2 2021, an estimated $39.3M increase.
- Simplex Trading's biggest Q2 2021 reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, cutting an estimated $25.9M.
- Simplex Trading fully exited Invesco QQQ Trust in Q2 2021, selling an estimated $36.1M.
- Simplex Trading's ten largest holdings make up 40% of its $104B portfolio in Q2 2021.
- Simplex Trading opened 2,250 new positions and closed 1,197 in Q2 2021.
- Simplex Trading's portfolio value rose 86% quarter-over-quarter to $104B.
Based on Simplex Trading's 13F filing for Q2 2021, filed 12 Aug 2021.