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 |
LNKD
LinkedIn Corporation
LNKD
|
+$21.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.3M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$15M |
| 4 |
Biogen
BIIB
|
+$14.9M |
| 5 |
Visa
V
|
+$14.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$36.7M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$14.7M |
| 5 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$13.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 6.61% |
| 2 | Healthcare | 6.55% |
| 3 | Technology | 6.45% |
| 4 | Consumer Discretionary | 4.54% |
| 5 | Financials | 4.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2451
Atara Biotherapeutics
ATRA
$71.2M
| $32K | ﹤0.01% |
57
+31
| +119% | +$14.9K |
|
2452
CALL
British American Tobacco
BTI
$132B
| $32K | ﹤0.01% |
248
-68
| -22% | -$4.12K |
|
2453
Caleres
CAL
$396M
| $32K | ﹤0.01% |
+1,361
| New | +$33.4K |
|
2454
CALL
CSX Corp
CSX
$98.6B
| $32K | ﹤0.01% |
1,074
-2,103
| -66% | -$18.3K |
|
2455
PUT
Invesco DB Base Metals Fund
DBB
$306M
| $32K | ﹤0.01% |
265
+70
| +36% | +$889 |
|
2456
CALL
Quest Diagnostics
DGX
$25.1B
| $32K | ﹤0.01% |
85
+1
| +1% | +$76 |
|
2457
CALL
Eastman Chemical
EMN
$7.8B
| $32K | ﹤0.01% |
160
+29
| +22% | +$2.13K |
|
2458
CALL
Edgewell Personal Care
EPC
$1.27B
| $32K | ﹤0.01% |
59
+39
| +195% | +$3.15K |
|
2459
CALL
Element Solutions
ESI
$9.12B
| $32K | ﹤0.01% |
384
-38
| -9% | -$354 |
|
2460
Franklin Covey
FC
$233M
| $32K | ﹤0.01% |
+2,119
| New | +$32.8K |
|
2461
PUT
General Mills
GIS
$19.2B
| $32K | ﹤0.01% |
377
+42
| +13% | +$2.67K |
|
2462
CALL
Invesco
IVZ
$13.3B
| $32K | ﹤0.01% |
596
+377
| +172% | +$11.2K |
|
2463
CALL
JetBlue
JBLU
$1.96B
| $32K | ﹤0.01% |
397
+104
| +35% | +$1.93K |
|
2464
CALL
CarMax
KMX
$8.27B
| $32K | ﹤0.01% |
710
+523
| +280% | +$26.9K |
|
2465
CALL
J.M. Smucker
SJM
$12.6B
| $32K | ﹤0.01% |
28
-169
| -86% | -$22.5K |
|
2466
PUT
Stellantis
STLA
$16.5B
| $32K | ﹤0.01% |
508
+312
| +159% | +$2.26K |
|
2467
PUT
Tucows
TCX
$97.1M
| $32K | ﹤0.01% |
85
+72
| +554% | +$1.71K |
|
2468
TIM SA
TIMB
$10.2B
| $32K | ﹤0.01% |
+3,086
| New | +$31.6K |
|
|
TRUE
2469
CALL
DELISTED
TrueCar
TRUE
| $32K | ﹤0.01% |
113
+101
| +842% | +$670 |
|
2470
Vanguard Small-Cap Growth ETF
VBK
$23.2B
| $32K | ﹤0.01% |
+260
| New | +$31.5K |
|
2471
Vanguard Consumer Staples ETF
VDC
$7.86B
| $32K | ﹤0.01% |
233
-64
| -22% | -$8.7K |
|
2472
CALL
Wayfair
W
$11.1B
| $32K | ﹤0.01% |
205
+31
| +18% | +$1.24K |
|
|
XYZ
2473
CALL
Block Inc
XYZ
$45.9B
| $32K | ﹤0.01% |
861
+561
| +187% | +$6.34K |
|
|
VIVS
2474
CALL
VivoSim Labs
VIVS
$1.46M
| $32K | ﹤0.01% |
+2
| New | +$1.34K |
|
|
ECHO
2475
CALL
DELISTED
Echo Global Logistics, Inc.
ECHO
| $32K | ﹤0.01% |
935
+590
| +171% | +$13.9K |
|
Similar funds
Simplex Trading's Q2 2016 Portfolio in Review
As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.
By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.
On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.
- Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
- Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
- Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
- Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
- Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
- Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.
Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.