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 |
Apple
AAPL
|
+$70.1M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$46.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$37.4M |
| 4 |
Amazon
AMZN
|
+$37M |
| 5 |
Tesla
TSLA
|
+$28M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alibaba
BABA
|
+$41M |
| 2 |
Boeing
BA
|
+$27.8M |
| 3 |
Biogen
BIIB
|
+$18.9M |
| 4 |
SPDR Gold Trust
GLD
|
+$18.3M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.75% |
| 2 | Consumer Discretionary | 0.58% |
| 3 | Communication Services | 0.33% |
| 4 | Healthcare | 0.31% |
| 5 | Industrials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3526
PUT
Timken Company
TKR
$9.81B
| $247K | ﹤0.01% |
+44
| New | +$2.22K |
|
|
SEAC
3527
DELISTED
Seachange International Inc
SEAC
| $247K | ﹤0.01% |
2,951
+1,121
| +61% | +$76.1K |
|
3528
PUT
National Fuel Gas
NFG
$7.67B
| $246K | ﹤0.01% |
53
-128
| -71% | -$5.84K |
|
|
PINC
3529
CALL
DELISTED
Premier
PINC
| $246K | ﹤0.01% |
65
+4
| +7% | +$141 |
|
3530
ProShares Ultra Gold
UGL
$661M
| $246K | ﹤0.01% |
20,120
+7,348
| +58% | +$86.7K |
|
|
EBIX
3531
DELISTED
Ebix Inc
EBIX
| $246K | ﹤0.01% |
7,381
-2,639
| -26% | -$97.5K |
|
3532
Century Aluminum
CENX
$4.44B
| $245K | ﹤0.01% |
32,718
+28,343
| +648% | +$196K |
|
3533
PUT
Nokia
NOK
$51.8B
| $245K | ﹤0.01% |
661
-981
| -60% | -$3.86K |
|
3534
CALL
Rayonier
RYN
$6.52B
| $245K | ﹤0.01% |
83
+80
| +2,667% | +$2.18K |
|
3535
Alkermes
ALKS
$8.79B
| $244K | ﹤0.01% |
12,002
+3,150
| +36% | +$62.6K |
|
3536
Brixmor Property Group
BRX
$9.93B
| $244K | ﹤0.01% |
11,311
+9,758
| +628% | +$208K |
|
3537
Direxion Daily S&P Oil & Gas Exp. & Prod. Bear 2X ETF
DRIP
$109M
| $244K | ﹤0.01% |
53
-35
| -40% | -$235K |
|
|
EVRI
3538
CALL
DELISTED
Everi Holdings
EVRI
| $244K | ﹤0.01% |
182
+92
| +102% | +$1.05K |
|
3539
CALL
Genesco
GCO
$416M
| $244K | ﹤0.01% |
51
+46
| +920% | +$1.91K |
|
3540
PUT
Verra Mobility
VRRM
$636M
| $244K | ﹤0.01% |
+175
| New | +$2.51K |
|
|
CHNG
3541
PUT
DELISTED
Change Healthcare Inc. Common Stock
CHNG
| $244K | ﹤0.01% |
+149
| New | +$2K |
|
|
VER
3542
CALL
DELISTED
VEREIT, Inc.
VER
| $244K | ﹤0.01% |
53
+19
| +56% | +$911 |
|
3543
CALL
Corbus Pharmaceuticals
CRBP
$168M
| $243K | ﹤0.01% |
15
+13
| +650% | +$1.92K |
|
3544
LendingTree
TREE
$564M
| $243K | ﹤0.01% |
+804
| New | +$266K |
|
3545
PUT
Virtu Financial
VIRT
$5.12B
| $243K | ﹤0.01% |
152
-47
| -24% | -$775 |
|
3546
eHealth
EHTH
$43.2M
| $242K | ﹤0.01% |
2,526
+324
| +15% | +$25.1K |
|
3547
Global Partners
GLP
$1.64B
| $242K | ﹤0.01% |
12,047
+10,554
| +707% | +$212K |
|
3548
PUT
Rollins
ROL
$18.8B
| $242K | ﹤0.01% |
110
+68
| +162% | +$1.61K |
|
|
HIBB
3549
CALL
DELISTED
Hibbett, Inc. Common Stock
HIBB
| $241K | ﹤0.01% |
86
-122
| -59% | -$3.1K |
|
3550
CALL
Clean Harbors
CLH
$15.9B
| $240K | ﹤0.01% |
28
+5
| +22% | +$406 |
|
Similar funds
Simplex Trading's Q4 2019 Portfolio in Review
As of Q4 2019, Simplex Trading held 8,523 positions worth $45.7B, up 30% from $35.2B the previous quarter. Its ten largest holdings account for 39% of the portfolio.
Simplex Trading's Q4 2019 filing shows 1,277 new, 3,072 increased, 2,710 reduced and 1,251 closed positions. Its largest new stake was Apple: 1,090,316 shares worth $80M. The largest sale was Alibaba, an estimated $41M.
By sector, the portfolio is most concentrated in Technology at 0.75% of assets, up from 0.48% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q4 2019 buy was Apple: 1,090,316 shares worth $80M.
- Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q4 2019, an estimated $46.6M increase.
- Simplex Trading's biggest Q4 2019 reduction was Alibaba, cutting an estimated $41M.
- Simplex Trading fully exited Boeing in Q4 2019, selling an estimated $27.8M.
- Simplex Trading's ten largest holdings make up 39% of its $45.7B portfolio in Q4 2019.
- Simplex Trading opened 1,277 new positions and closed 1,251 in Q4 2019.
- Simplex Trading's portfolio value rose 30% quarter-over-quarter to $45.7B.
Based on Simplex Trading's 13F filing for Q4 2019, filed 5 Feb 2020.