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 | |
|---|---|---|---|---|---|---|
526
Vanguard Growth ETF
VUG
$222B
| $495K | 0.03% |
27,756
+7,992
| +40% | +$142K |
|
527
OneMain Financial
OMF
$6.91B
| $494K | 0.03% |
21,671
+18,490
| +581% | +$523K |
|
|
AL
528
DELISTED
Air Lease Corp
AL
| $493K | 0.03% |
18,417
+2,172
| +13% | +$64.7K |
|
529
Deere & Co
DE
$164B
| $493K | 0.03% |
6,095
-29,038
| -83% | -$2.38M |
|
|
GG.WS.A
530
CALL
DELISTED
GOLDCORP INC SERIES A WARRANTS EXP 5/30/2007
GG.WS.A
| $493K | 0.03% |
2,182
-68
| -3% | -$15.4K |
|
531
Voya Financial
VOYA
$8.93B
| $489K | 0.03% |
19,756
+6,565
| +50% | +$201K |
|
|
GRA
532
DELISTED
W.R. Grace & Co.
GRA
| $488K | 0.03% |
6,675
+399
| +6% | +$30.5K |
|
533
CALL
American Airlines Group
AAL
$9.78B
| $484K | 0.03% |
4,964
-53
| -1% | -$1.79K |
|
534
PUT
Rio Tinto
RIO
$150B
| $482K | 0.03% |
2,577
+906
| +54% | +$27.1K |
|
535
CALL
Vanguard S&P 500 ETF
VOO
$979B
| $482K | 0.03% |
951
+95
| +11% | +$18.1K |
|
536
CALL
First Majestic Silver
AG
$8.55B
| $481K | 0.03% |
865
+52
| +6% | +$542 |
|
|
CELG
537
CALL
DELISTED
Celgene Corp
CELG
| $480K | 0.03% |
2,749
-1,133
| -29% | -$117K |
|
538
PUT
ConocoPhillips
COP
$145B
| $479K | 0.03% |
3,118
+1,546
| +98% | +$68.2K |
|
539
CALL
Gen Digital
GEN
$15.4B
| $479K | 0.03% |
1,674
+1,341
| +403% | +$24.1K |
|
540
Lumentum
LITE
$64.6B
| $477K | 0.03% |
19,740
+15,875
| +411% | +$393K |
|
541
YPF
YPF
$20.6B
| $475K | 0.03% |
+24,756
| New | +$492K |
|
|
AMAG
542
DELISTED
AMAG Pharmaceuticals
AMAG
| $473K | 0.03% |
19,775
+9,057
| +85% | +$208K |
|
543
Sunoco
SUN
$14.3B
| $472K | 0.03% |
+15,770
| New | +$516K |
|
544
Eastman Chemical
EMN
$7.93B
| $471K | 0.03% |
6,939
+600
| +9% | +$44.1K |
|
|
SHPG
545
CALL
DELISTED
Shire pic
SHPG
| $471K | 0.03% |
1,552
+1,018
| +191% | +$184K |
|
546
Entergy
ETR
$53.6B
| $467K | 0.03% |
+11,484
| New | +$441K |
|
547
PUT
Target
TGT
$62.6B
| $467K | 0.03% |
2,599
+1,152
| +80% | +$85.9K |
|
548
PUT
United States Oil Fund
USO
$2.36B
| $467K | 0.03% |
223
-236
| -51% | -$21.1K |
|
|
MRO
549
CALL
DELISTED
Marathon Oil Corporation
MRO
| $467K | 0.03% |
3,334
-528
| -14% | -$6.98K |
|
|
DNKN
550
DELISTED
Dunkin' Brands Group, Inc.
DNKN
| $467K | 0.03% |
10,710
+4,637
| +76% | +$212K |
|
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.